The Christian Perspective On War [Study]

 Few topics generate more theological controversy, pastoral complexity, and personal anguish among Christians than the question of war.

A soldier preparing to deploy asks his pastor whether God can bless his service.

A grieving mother whose son was killed in combat wonders whether his death had divine purpose.

A young Christian pacifist refuses military conscription and faces social ostracism.

A military chaplain wrestles with whether he can pray for warriors going into battle.

These are not abstract theological puzzles, but pressing issues that demand a comprehensive, biblically grounded, and theologically coherent response in an ongoing culture of wars.

The difficulty of the topic is compounded by the apparent internal tension within Scripture itself.

Speaker	Peace	War
God	“I will make a covenant of peace with them.” — Ezekiel 34:25	“You shall devote them to complete destruction” — Deuteronomy 20:17
Jesus	“Blessed are the peacemakers, for they shall be called sons of God” — Matthew 5:9	“Do not think that I have come to bring peace to the earth. I have not come to bring peace, but a sword” — Matthew 10:34
Paul	“If possible, so far as it depends on you, live peaceably with all” — Romans 12:18	Government “does not bear the sword in vain” — Romans 13:4

Any responsible Christian theology of war must grapple honestly with this complexity.

Outline

1.0 The Biblical Terrain Of War

2.0 Christian Positions On Warfare

3.0 Interpretive Approaches To The Joshua Conquest Narratives

4.0 Reconciling Matthew 5 And Romans 13

5.0 A Christian Ethical Framework For Violence And Defense

6.0 Divine Sovereignty And Human Moral Responsibility In Warfare

7.0 An Assessment Of Just War Theory Vs. Pacifism

8.0 Objections And Responses

1.0 The Biblical Terrain Of War

1.1 Old Testament Texts on War

The Old Testament contains an extensive and sometimes unsettling theology of warfare. God himself is described as a warrior: "The LORD is a man of war; the LORD is his name" (Exod 15:3). This divine warrior imagery is not peripheral to the Old Testament narrative but is woven throughout its redemptive structure. The Exodus itself is framed as a divine military victory over Egypt, with God defeating Pharaoh's armies at the Red Sea (Exod 14:13-31). The conquest of Canaan is presented as the culmination of God's covenant promises to Abraham, carried out through military means under Joshua's leadership (Josh 1-12).

Several categories of Old Testament war texts deserve attention.

1.1.1 The first is commanded warfare, in which God explicitly directs Israel to engage in military action. Deuteronomy 20 sets forth a detailed legal code for warfare, including rules of engagement, exemptions from military service (vv. 5-8), and the treatment of distant cities (vv. 10-15) versus that of Canaanite cities, which were subject to the herem, or "ban"—complete destruction (vv. 16-18). The theological rationale is that the Canaanites' religious practices would corrupt Israel: "that they may not teach you to do according to all the abominable practices that they have done for their gods, and so you sin against the LORD your God" (Deut 20:18).

1.1.2 The second category is divine judgment through warfare. The conquest of Canaan is explicitly framed as God's judgment on Canaanite sin: "it is because of the wickedness of these nations that the LORD your God is driving them out from before you" (Deut 9:4). Critically, God waited four hundred years for this judgment, telling Abraham, "the iniquity of the Amorites is not yet complete" (Gen 15:16). This framing presents the destruction of Canaan as long-delayed divine justice rather than arbitrary violence. Similarly, the prophets interpret the later Assyrian and Babylonian invasions of Israel as God's judgment on Israel's covenantal unfaithfulness (Isa 10:5-6; Hab 1:6).

1.1.3 The third category comprises legal codes governing warfare. Deuteronomy 20-21 contains regulations that, by ancient standards, were remarkably humane: offering terms of peace before a siege (20:10-11), protecting women from sexual violence in the rules governing war brides (21:10-14), and prohibiting the destruction of fruit trees during a siege (20:19-20). These laws indicate that even divinely sanctioned warfare was to be conducted within ethical constraints, an early form of the Just War framework (discussed later).

1.1.4 The Psalms contribute a fourth strand: the liturgical celebration of divine military intervention. Psalm 144:1 declares, "Blessed be the LORD, my rock, who trains my hands for war, and my fingers for battle." Psalm 68 celebrates God's victorious processions, when he "leads captives in your train" (v. 18). These texts present military victory as a divine blessing and were used in Israel's worship. Yet alongside these warrior psalms stand psalms of lament over war's destruction: Psalm 137 voices raw anguish over Babylonian captivity, and Lamentations 2-3 mourns Jerusalem's fall, wrestling theologically with God's role in the city's destruction.

1.1.5 Finally, the Old Testament contains eschatological hopes for peace. Isaiah 2:4 envisions a coming age when nations "shall beat their swords into plowshares, and their spears into pruning hooks; nation shall not lift up sword against nation, neither shall they learn war anymore." Micah 4:3 reiterates this vision. These texts suggest that warfare, however God-ordained in the present age, is not the ultimate divine intention for human history.

1.2 New Testament Texts on War

The New Testament's approach to warfare shifts markedly in emphasis without entirely abandoning the Old Testament framework. Jesus's most direct teaching on violence appears in the Sermon on the Mount: "You have heard that it was said, 'An eye for an eye and a tooth for a tooth.' But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also" (Matt 5:38-39). This is followed by the command to love enemies and pray for persecutors (Matt 5:43-48), grounded in imitating God's character, who "makes his sun rise on the evil and on the good" (Matt 5:45).

The scope of Matthew 5:38-48 is a matter of significant interpretive debate. Does "do not resist the one who is evil" constitute an absolute prohibition on all use of force?

Several contextual observations are relevant. In first-century Jewish culture, the "slap on the right cheek" was typically understood as a personal insult or humiliation—a backhanded slap—rather than a mortal attack. R. T. France notes that Jesus's examples in Matthew 5:39-41 are all "cases of personal affront or injury, not of military attack on the community."[1] This suggests that Jesus is addressing personal retaliation and vengeance, not necessarily prohibiting all defensive force.

            Jesus's arrest scene is a striking narrative moment. When Peter drew his sword and struck the high priest's servant, Jesus rebuked him: "Put your sword back into its place. For all who take the sword will perish by the sword" (Matt 26:52). John 18:36 adds Jesus's explanation: "My kingdom is not of this world. If my kingdom were of this world, my servants would have been fighting, that I might not be delivered over to the Jews. But my kingdom is not from the world." The text and Jesus' interpretation are crucial. Jesus does not say violence is categorically impermissible, but that his kingdom does not advance by worldly political violence.

            Paul's treatment of government authority in Romans 13:1-7 offers the New Testament's most direct affirmation of state power, including lethal force. He writes: "Let every person be subject to the governing authorities. For there is no authority except from God, and those that exist have been instituted by God" (Rom 13:1). The governing authority "is the servant of God, an avenger who carries out God's wrath on the wrongdoer" (Rom 13:4). The phrase "does not bear the sword in vain" (Rom 13:4) almost certainly refers to capital punishment and, by extension, the legitimate use of lethal force to maintain order and justice.

            Significantly, the New Testament portrays several military figures with respect, without suggesting that their profession is incompatible with faith. The centurion whose servant Jesus healed is commended for faith that Jesus had "not found... in Israel" (Matt 8:10)—and there is no suggestion that he should resign his commission. John the Baptist, when soldiers asked how to live rightly, told them to "be content with your wages" (Luke 3:14)—not to abandon military service. Cornelius, described as "a devout man who feared God" (Acts 10:2), was the first Gentile to receive the Holy Spirit, with no indication that his role as a centurion was problematic.

            The New Testament also develops an extensive theology of spiritual warfare that employs military imagery without endorsing physical violence: "For though we walk in the flesh, we are not waging war according to the flesh. For the weapons of our warfare are not of the flesh but have divine power to destroy strongholds" (2 Cor 10:3-4). Ephesians 6:10-18 elaborates on the "full armor of God"—truth, righteousness, faith, salvation, the Spirit, and prayer. This militaristic language for spiritual combat suggests that the New Testament does not reject warfare as a category but reorients its primary expression toward the spiritual realm.

1.3 The Apparent Contradiction: Jesus vs. the Old Testament

The contrast between Old Testament warfare commanded and Jesus's teaching on enemy love poses one of the most significant hermeneutical challenges in Christian theology. Scholars have proposed several approaches to address this contrast.

The first is progressive revelation. Here, God accommodated his revelation to Israel's historical and cultural context, gradually revealing his ultimate will over time. Jesus represents the full and final revelation of God's character: "Long ago, at many times and in many ways, God spoke to our fathers by the prophets, but in these last days he has spoken to us by his Son" (Heb 1:1-2). The violence of the Old Testament is not God's final word but an earlier stage in an instructive sequence that culminates in the enemy-love of Christ. Then, the conquest narratives must be read within this "grand narrative of redemption," in which they play a unique and unrepeatable role.[2]

            The second approach highlights the covenantal distinction. The Old Covenant operated within the framework of a theocratic nation-state, where political, military, and religious leadership overlapped. Israel was both a covenant community and a political entity with geographic territory to defend and conquer. The New Covenant establishes a different kind of community. This community is transnational and non-political, defined not by land or ethnicity but by faith in Christ. Accordingly, the military commands given to theocratic Israel are not directly applicable to the church. 

The third approach argues that the extreme violence in the Old Testament conquest narratives is best understood through ancient Near Eastern literary conventions, in which "total destruction" language was hyperbolic rather than literal. (See later).

            What can be said with confidence at this stage is that any responsible Christian theology of war must hold the following tensions:

God commissioned warfare in the Old Testament as an instrument of judgment; Jesus taught enemy-love as the defining characteristic of his disciples; Paul affirmed the God-ordained authority of government to use lethal force; and the New Testament's primary deployment of military imagery is spiritual rather than physical.

These tensions are not irreconcilable, but they require careful hermeneutical work to develop a balanced view of war.

2.0 Christian Positions On Warfare

2.1 Just War Theory

Just War Theory is the dominant position in Christian ethics on warfare, holding that war can be morally justified under specific conditions and that Christians may participate in such wars. This view has roots in pre-Christian Roman thought (Cicero) but was developed into its classical Christian form by Augustine of Hippo (354-430) and systematized by Thomas Aquinas (1225-1274). It remains the official or dominant position of Roman Catholicism, Eastern Orthodoxy, Lutheranism, Calvinism, Anglicanism, and most evangelical Protestantism.

Augustine's formulation emerged in the context of Rome's fall and the question of whether Christians could serve in the Roman military to defend the empire. In The City of God, Augustine argued that war could be just if waged for the right reasons by the right authority:

"The passion for inflicting harm, the cruel thirst for vengeance, an unpacific and relentless spirit, the fever of revolt, the lust for power, and such like things—all these are rightly condemned in war. It is the wrongdoing of the opposing party which compels the wise man to wage just wars."[3]

For Augustine, the critical factor was interior disposition: war waged from love of neighbor and desire for justice was fundamentally different from war waged from hatred or greed.

Aquinas systematized Augustine's insights in the Summa Theologica, identifying three conditions for a just war: it must be declared by a sovereign authority (not by private individuals), it must be fought for a just cause (to redress wrongs or restore peace), and it must be prosecuted with the right intention (love of peace, not passion for violence).[4]

Early modern theorists, especially Francisco de Vitoria (1485-1546) and Francisco Suárez (1548-1617), later expanded these conditions into two categories: jus ad bellum (justice in going to war) and jus in bello (justice in the conduct of war). Contemporary just war theory has added a third category, jus post bellum (justice in the aftermath of war).

The Criteria of Just War Theory

Jus ad Bellum (Right to Go to War):

(1) Legitimate Authority: War must be declared by a proper governing authority, not by private individuals or non-state actors. This criterion is grounded in Romans 13:4, which affirms that government "does not bear the sword in vain" as "God's servant."

(2) Just Cause: War may be waged only for reasons that are objectively morally justified—self-defense, the defense of innocent third parties, the recovery of what was wrongfully taken, or the punishment of genuine wrongdoing. Conquest, economic exploitation, and ideological imposition are categorically excluded.

(3) Right Intention: Even if the cause is just, the motivation must be proper: the restoration of peace, the protection of innocents, and the love of justice—not vengeance, national glory, or ethnic hatred.

(4) Last Resort: All reasonable diplomatic, economic, and political alternatives must be exhausted before resorting to armed force.

(5) Reasonable Hope of Success: A war that cannot achieve its objectives merely prolongs suffering and lacks moral justification.

(6) Proportionality: The anticipated good from the war must outweigh the harm it causes, including civilian casualties, economic destruction, and regional destabilization.

Jus in Bello (Conduct in War):

(1) Discrimination: Non-combatants must be distinguished from combatants and protected from intentional harm. This criterion absolutely prohibits targeting civilians.

(2) Proportionality in Conduct: The force used in any particular action must be proportional to the military objective and minimize collateral damage.

(3) No Prohibited Means: Certain weapons and tactics are categorically prohibited regardless of military advantage (torture, weapons of mass destruction deployed against civilian populations, etc.). Chemical warfare, for instance, is prohibited.

Jus Post Bellum (Justice after War):

Just war obligations extend into the post-conflict period: proportional peace terms, punishment of war crimes, protection of civilians during occupation, and a genuine effort at reconstruction and reconciliation. Brian Orend has been particularly important in developing this third category within contemporary just war thought.[5]

2.2 Christian Pacifism

Christian pacifism holds that followers of Jesus Christ are categorically prohibited from participating in warfare and from using lethal violence. This position was the dominant posture of the pre-Constantinian church (before 312 AD) and has been consistently maintained by the historic peace churches, including Mennonites, Quakers, and the Church of the Brethren, as well as significant twentieth-century theologians.

This view holds that Jesus's nonviolence is not a personal ethic separate from politics but a comprehensive social and political alternative. In first-century Palestine, Jesus faced the Zealot option, a violent revolution against Rome, and deliberately rejected it in favor of the way of the cross. "The cross is not a detour or a hurdle on the way to the kingdom, nor is it even the way to the kingdom; it is the kingdom come."[6] Pacifism is not passive withdrawal but active engagement with the world through suffering love.

Pacifism is grounded in ecclesiology: the church is called to be a "contrast society" that embodies kingdom values in distinction from the surrounding culture. "The church does not have a social ethic; the church is a social ethic."[7] Therefore, the church's witness to nonviolence is itself a political act, demonstrating that human community can be ordered differently than by coercion and violence.

The Biblical Case for Pacifism

Pacifists cite several lines of biblical evidence. First, Jesus's teaching in Matthew 5:38-48 appears to reject retaliation. The command to "turn the other cheek" and "love your enemies" (Matt 5:39, 44) is presented without qualification. Second, Jesus's example is consistently nonviolent: he submitted to arrest without resistance, healed the soldier whose ear Peter severed (Luke 22:51), and, from the cross, prayed for his executioners (Luke 23:34). Third, Paul commands in Romans 12:17-21: "Repay no one evil for evil... Beloved, never avenge yourselves, but leave it to the wrath of God, for it is written, 'Vengeance is mine, I will repay, says the Lord'". Fourth, the pre-Constantinian church largely rejected military service on the grounds of both bloodshed and imperial religious oaths.

Tertullian argues for pacifism, saying that when Peter drew the sword at Jesus's arrest, "The Lord, by disarming Peter, disarmed every soldier thenceforth."[8] This argument, that Christ's rebuke of Peter constitutes a disarming of all Christian military service, has been influential in pacifist thought across the centuries.

2.3 Christian Realism

Whenever there are two views on a topic, a third often serves as the middle ground. Christian Realism, associated primarily with Reinhold Niebuhr (1892-1971), occupies that mediating position between just war theory's relative acceptance of violence and pacifism's categorical rejection of it. 

Niebuhr argued that both positions, in their pure forms, fail to adequately account for the realities of human sinfulness and the ambiguities of political life. The ethical idealism of individual Christian love cannot be directly applied to collective political action:

"The relation of politics and ethics is best understood by recognizing that the realm of politics achieves a very rough and approximate justice compared to what a sensitive conscience demands."[9]

Pacifism, however noble in intention, can become a form of moral perfectionism that withdraws from the messy responsibilities of the real world. Pacifism "expresses a genuine impulse toward perfection which belongs to the genius of the Christian religion" but "does not know what to do with the accumulations of guilt and evil in human history."[10] For Niebuhr, refusing to use force against Nazi Germany, for example, was not an act of moral purity but of moral irresponsibility—an abdication of love toward Hitler's victims.

Christian Realism thus accepts that governments must use force to maintain order and protect the innocent (Romans 13), while insisting that Christians maintain a prophetic, critical stance toward all human violence. It recognizes that even justified wars involve moral compromise and require penitence. The Christian participates in the "lesser evil" of restrained violence to prevent the greater evil of unchecked aggression, all while acknowledging the tragic dimension of this choice.

3.0 Interpretive Approaches To The Joshua Conquest Narratives

The conquest narratives in Joshua pose the most acute hermeneutical challenge for a Christian theology of war. The following texts raise profound moral questions that demand explanation rather than avoidance.

Joshua 6:21: “Then they devoted all in the city to destruction, both men and women, young and old, oxen, sheep, and donkeys, with the edge of the sword.” Joshua 10:40: "So Joshua struck the whole land, the hill country and the Negeb and the lowland and the slopes, and all their kings. He left none remaining, but devoted to destruction all that breathed, just as the LORD God of Israel commanded."

Several approaches interpret these texts.

3.1 The Literal-Historical Approach

The traditional evangelical reading takes the conquest accounts at face value, treating them as records of God's literal commands. Proponents argue that the Canaanites' destruction was a unique act of divine judgment on a civilization whose sins had reached a point of divine intolerance. The text itself provides this rationale: "It is because of the wickedness of these nations that the LORD your God is driving them out before you" (Deut 9:4). The Canaanite religious practices, including child sacrifice to Molech by fire (Lev 18:21), sexual immorality, and divination, are presented as the moral basis for divine judgment.

This interpretation has two important features. First, the conquest was a unique, unrepeatable divine commission. God did not authorize a general principle of religious warfare; he gave specific commands to a specific people at a specific moment in redemptive history. The herem (devotion to destruction) was a one-time theological act, not a template for subsequent military policy. Second, the divine patience shown in waiting four hundred years for Canaanite sin to "be complete" (Gen 15:16) indicates that this was not arbitrary violence but long-delayed justice.

3.2 The Progressive Revelation Approach

A second approach holds that the conquest narratives reflect an incomplete theological understanding on Israel's part, leading to a human misattribution of violent impulses to divine command. On this view, God's true character is fully revealed in Jesus, who commands enemy-love and rejects violence. The Old Testament's violent portrayals of God are "textual portraits" that do not perfectly correspond to God's actual character.[11]

While this approach has pastoral appeal and takes Jesus's teaching seriously, it faces significant theological difficulties. It effectively creates a canon within the canon, privileging certain texts (the Gospels) over others (Joshua) without a principled hermeneutical basis. It also undermines the plenary inspiration and authority of Scripture, a point most evangelical theologians are unwilling to concede. The approach is better suited to liberal Protestant frameworks than to evangelical hermeneutics.

3.3 The Typological/Redemptive-Historical Approach

A third approach, rooted in the biblical-theological tradition of Geerhardus Vos and developed by Daniel Gard and others, reads the conquest narratives typologically: Israel's conquest of Canaan is a historical type of future realities fulfilled in Christ. Canaan represents the promised kingdom of God; Israel's entry represents the redeemed people entering God's rest; and the herem represents the absolute incompatibility of God's holy kingdom with sin and unbelief. The book of Hebrews explicitly develops this typology (Heb 3:7-4:11), identifying Joshua's rest as a shadow of the greater rest Christ provides.[12]

In this reading, the conquest is not a model for human military action but a dramatic enactment of God's ultimate victory over sin. The violence is real and historical, yet its theological significance is primarily typological rather than prescriptive. The Christian looks not to Joshua for military ethics but to Christ, who accomplishes the ultimate conquest through the cross and the resurrection.

3.4 The Hyperbolic/Genre Approach

The most recent and exegetically sophisticated approach has been developed by Paul Copan and Matthew Flannagan in Did God Really Command Genocide? Coming to Terms with the Justice of God. Drawing on comparative ancient Near Eastern studies, Copan and Flannagan argue that the "total destruction" language in Joshua reflects standard hyperbolic conventions of ancient warfare rhetoric. Egyptian, Assyrian, Hittite, and Moabite military texts regularly use identical language—"left no survivors," "utterly destroyed"—as conventional expressions of military victory rather than literal descriptions of total annihilation.[13]

The strongest evidence for this reading lies within Joshua itself. Joshua 10:40 states that Joshua "left no survivors" in the southern campaign. Yet Joshua 15 and Judges 1 presuppose surviving inhabitants of these same cities, including Canaanites in Hebron (Josh 15:63), Gezer (Josh 16:10), and Megiddo (Judg 1:27-28). The most natural explanation is that "left no survivors" means "decisively defeated the military opposition," not "killed every biological inhabitant." The actual targets were military combatants in fortified cities (Josh 6:2; 8:1), not systematic civilian genocide.

Furthermore, Rahab and her entire household survived the fall of Jericho (Josh 6:25), and the Gibeonite deception preserved their entire population (Josh 9:15). These narrative exceptions further suggest that the "total destruction" accounts describe military conquest, not biological extermination.

3.5 A Combined Approach to Understanding Joshua

A responsible Christian hermeneutic of the conquest narratives should incorporate these approaches as interpretive principles while honestly acknowledging the difficulty of these texts. Attempts to minimize or explain away the moral challenge do a disservice to Scripture and to believers who feel its weight.

The text itself provides the theological rationale for the long-delayed judgment on extreme sin. The unique and unrepeatable character of the divine commission must be emphasized; the herem was a specific theological act, not a general principle for Christian military ethics. The hyperbolic-genre reading resolves many of the moral difficulties without sacrificing biblical authority. The typological dimension must also be appreciated: Joshua foreshadows Christ's ultimate conquest, accomplished not by violence but by the cross. Critically, these texts can never be invoked to justify modern religious warfare or ethnic cleansing; any such application represents a catastrophic hermeneutical failure.

4.0 Reconciling Matthew 5 And Romans 13

The relationship between Jesus's command to "turn the other cheek" (Matt 5:39) and Paul's affirmation that government "does not bear the sword in vain" (Rom 13:4) poses the central exegetical challenge to developing a coherent Christian ethics of force. Three major frameworks for reconciliation have been proposed.

4.1 The Two-Kingdoms Framework

Martin Luther's doctrine of the two kingdoms, articulated especially in Temporal Authority: To What Extent It Should Be Obeyed (1523), remains the most influential Protestant framework for interpreting these texts. Luther argued that God rules the world through two distinct "kingdoms" or "regiments." The Kingdom of God's Left Hand (or the Civil Kingdom) encompasses government, law, courts, and the use of force to maintain order and punish wrongdoing. The state operates here by God's design and authorization. Romans 13 governs this kingdom. The Kingdom of God's Right Hand (or the Spiritual Kingdom) encompasses the church, the gospel, grace, forgiveness, and the ethic of enemy-love. Christians relate to God and to one another through this kingdom. Matthew 5 governs this kingdom.

Within this framework, a Christian serving as a judge who sentences a murderer to imprisonment is operating in the left-hand kingdom as God's authorized agent of justice. The same Christian, personally forgiving that murderer and praying for his conversion, is operating in the right-hand kingdom as a disciple of Christ. These actions are not contradictory but complementary, with two distinct tasks in two different spheres, both authorized and demanded by God.

            The two-kingdoms framework provided the conceptual infrastructure for Protestant Just War thinking from the Reformation through modernity.[14] Its enduring strength is its ability to hold both texts at face value without dissolving one into the other. However, the framework's weakness is the risk of over-compartmentalization. There is a danger that distinguishing personal ethics from civic responsibility licenses a kind of moral schizophrenia in which Christians abandon the necessary prophetic critique of unjust state violence by simply "rendering to Caesar what is Caesar’s."

4.2 Different Audiences, Different Callings

A second approach suggests that Matthew 5 and Romans 13 address distinct questions for distinct audiences in distinct situations.

Matthew 5:38-48 is addressed to Jesus's disciples and concerns their ethical conduct in relationships: how they respond when personally wronged, insulted, extorted, or threatened. The examples Jesus provides—a slap on the cheek, a lawsuit over clothing, compelled service—are all cases of personal affront and private grievance. The text does not directly address whether a police officer should use force to stop a violent assailant or whether a nation may field an army for collective defense.

Romans 13:1-7, by contrast, addresses Christians' relationship to governing institutions. Paul is not telling individual Christians how to respond when personally wronged; he is explaining government's God-ordained function in the created order. The distinction between personal vengeance and governmental justice is explicit in the surrounding context: "Beloved, never avenge yourselves, but leave it to the wrath of God, for it is written, 'Vengeance is mine, I will repay, says the Lord'" (Rom 12:19) is followed immediately by "Let every person be subject to the governing authorities... the governing authority is God's servant, an avenger who carries out God's wrath on the wrongdoer" (Rom 13:1, 4). The individual renounces personal vengeance; the state exercises divinely authorized retributive justice.

This reading suggests that, when properly exegeted in context, the two texts are not in direct conflict but instead answer different questions. The question of whether and how Christians participate in state-sponsored force remains, but it cannot be resolved by simply setting Matthew 5:39 against Romans 13:4 as if they address the same situation.

4.3 The Present-Future Tension

A third approach, characteristic of Hauerwas and the Yoderian tradition, holds that the tension between these texts is real and intentional: Christians are citizens of the coming kingdom (Phil 3:20) called to live by its ethics even while dwelling in the present age. Romans 13 acknowledges the present age's political structures and God's permission of them, without requiring Christian participation in their violence. Matthew 5 sets forth the ethics of the future age, which Christians are to embody now as a prophetic witness.

On this view, the church does not resolve the tension but inhabits it as the distinctive mark of its witness. The church shows that human community can be ordered by love rather than coercion, and this demonstration is itself a profound political act, even if it entails accepting vulnerability and suffering.

4.4 A Combination Approach

The most exegetically defensible synthesis recognizes four key points.

First, Matthew 5 governs personal ethics and prohibits personal vengeance, retaliation, and violence driven by hatred or self-interest.

Second, Romans 13 describes the God-ordained role of government in a fallen world, which legitimately includes the use of force for justice and protection.

Third, these two texts do not directly address the same question, and reducing them to a simple contradiction misrepresents both.

Fourth, and critically, a Christian who participates in the government's use of force (as a soldier or police officer) must be governed by the spirit of Matthew 5—enemy-love, not hatred; protection of innocents, not personal vengeance; grief over violence, not glorying in it. The outer action may be authorized by Romans 13; the inner disposition must always be shaped by Matthew 5.

5.0 A Christian Ethical Framework For Violence And Defense

5.1 Self-Defense

The question of personal self-defense has generated significant disagreement within Christian ethics. Several biblical texts bear on the question:

Exodus 22:2-3 permits a homeowner who kills a nighttime intruder in defense of his household to avoid the guilt of bloodshed.

Luke 22:36, in which Jesus tells his disciples before his arrest to "let the one who has no sword sell his cloak and buy one," has been variously interpreted as permitting self-defense, as ironic, or as preparation for fulfilling Scripture (v. 37).

Nehemiah 4:13-14 records Nehemiah arming the inhabitants of Jerusalem to defend themselves and their families while rebuilding the city walls. The narrative implies divine approval.

Against these texts, pacifists have read the Matthew 5:39 command to "not resist the one who is evil" as categorically excluding self-defense. Thus, it is argued, the Christian's response to personal threat must mirror Christ's acceptance of suffering rather than self-preservation.[15]

The most widely held evangelical position holds that personal self-defense is morally permitted but not required.

This view rests on two moral foundations. First, the imago Dei affirms that human life, including one's own, has inherent worth before God and may be defended. Second, accepting death rather than resorting to self-defense (martyrdom) is an honorable Christian option, not a moral failure. The New Testament consistently prohibits violent retaliation motivated by anger or vengeance, not all use of force in defense of life. The Christian who defends herself against assault is not violating Matthew 5; in certain circumstances, she may be honoring the imago Dei. The Christian soldier who dies rather than fire on civilians is not violating Romans 13; he may be fulfilling the spirit of Matthew 5 in a military context.

5.2 Defense of Others (Third-Party Protection)

Third-party defense enjoys the broadest theological consensus among Christians as morally justified force. The moral logic draws on the positive duty to protect the vulnerable. Proverbs 24:11-12 commands: "Rescue those who are being taken away to death; hold back those who are stumbling to the slaughter. If you say, 'Behold, we did not know this,' does not he who weighs the heart perceive it?" This text implies active intervention, not passive hand-wringing.

The love-of-neighbor command (Matt 22:39) has direct implications for third-party defense. Thus, neighbor-love is not merely a warm feeling of affection but an active commitment to a neighbor's genuine good, including physical safety.[16]

A Christian who stands by in passive nonresistance while an innocent person is murdered has not demonstrated enemy-love toward the murderer; he has demonstrated neighbor-abandonment toward the victim.

The Good Samaritan who cares for the beaten man (Luke 10:33-35) models proactive intervention on behalf of the vulnerable; the ethical extension of this parable includes preventing the attack in the first place.

Even Hauerwas, who maintains a consistent pacifism, acknowledges the moral force of this objection: "I am not sure I can offer a completely satisfying answer to the question of what I would do if someone threatened my family."[17] The relative consensus across Christian ethical views on the permissibility of third-party defense is itself theologically significant.

5.3 National Defense

National defense is the most complex application of these principles, encompassing both the clearest biblical authorization (Romans 13) and the greatest potential for abuse. The state's God-ordained function is to protect its citizens: "to punish those who do wrong and to commend those who do right" (1 Pet 2:14). National defense against external aggression extends this domestic protective function.

Three issues complicate the Christian's engagement with national defense:

The first is global Christian solidarity. The gospel creates a transnational community: "There is neither Jew nor Greek... for you are all one in Christ Jesus" (Gal 3:28). Wars pit Christians against one another in opposing national armies, revealing a profound tension between national loyalty and ecclesial solidarity. The Christian soldier who recognizes that his enemy may be his brother in Christ faces a moral complexity that just war theory tends to understate.

The second issue is the idolatry of the nation-state. The "powers and principalities" in Ephesians 6:12 suggest that political structures can become demonic when they absolutize themselves and demand the ultimate loyalty that belongs only to God.[18]

Christian patriotism, however appropriate in itself, becomes idolatrous when it places national loyalty above kingdom ethics. The Christian soldier must always retain the prophetic capacity to refuse unlawful orders, even at personal cost.

The third issue concerns conscience in unjust wars. When a nation wages a war that fails the criteria of Just War theory, particularly when it targets civilians, employs disproportionate force, or pursues unjust ends, the Christian's obligation to the state (Romans 13) does not override the obligation to God (Acts 5:29: "We must obey God rather than men"). The Nuremberg Trials established the legal principle that "following orders" does not excuse war crimes; Christian theology affirms a parallel moral principle. The Christian in an unjust war faces the grave responsibility to engage in conscientious objection to specific immoral acts, and potentially to the war itself, accepting the legal consequences of that moral stand.

6.0 Divine Sovereignty And Human Moral Responsibility In Warfare

The relationship between God's sovereignty over all historical events (including wars) and human moral responsibility for those events is a perennial challenge in Christian theology, and it applies with particular force to warfare. If God "works all things according to the counsel of his will" (Eph 1:11), and if "the Lord foils the plans of the nations" and "the plans of the Lord stand firm forever" (Ps 33:10-11), does this mean that every war is willed and approved by God? If so, does human moral responsibility for war crimes diminish proportionally?

The biblical answer to both questions is no, but the explanation requires careful theological distinctions. The classic Reformed distinction between God's decretive will (what God sovereignly ordains to come to pass) and God's preceptive will (what God commands human beings to do) is indispensable here. God may sovereignly permit (and even use) human evil within his providential purposes without thereby approving or commanding it.

The paradigmatic biblical case is Joseph's brothers selling him into slavery. Genesis 50:20 explicitly holds both human wickedness and divine sovereignty together: "As for you, you meant evil against me, but God meant it for good." The brothers' malice was real and culpable; God's sovereign purpose working through it was also real. Neither cancels the other.

Acts 2:23 provides an even more striking instance: Christ was "delivered up according to the definite plan and foreknowledge of God" and "crucified and killed by the hands of lawless men." The crucifixion was the centerpiece of God's eternal redemptive plan and a profound human moral atrocity. Divine sovereignty and human guilt are affirmed without resolution into either fatalism or Pelagianism.

To see how this applies directly to warfare, we turn to the OT prophets. Habakkuk 1:6 records God declaring: "For behold, I am raising up the Chaldeans, that bitter and hasty nation, who march through the breadth of the earth, to seize dwellings not their own." God uses Babylon as his instrument of judgment against Israel's unfaithfulness. Yet Habakkuk 2:6-17 records God's subsequent judgment on Babylon for its violence, pride, and idolatry. God used Babylon; Babylon was morally accountable for its actions. The instrument of God's judgment is not thereby exempt from judgment itself.

This pattern has direct implications for Christian military ethics. God's sovereignty over the outcome of wars does NOT:

(1) Reduce human moral responsibility for specific acts of violence. The Christian soldier who commits a war crime cannot invoke divine sovereignty as a defense. Moral accountability is not diminished by the fact that God works within and through human choices.

(2) License Christian participation in unjust wars. God's sovereignty over history does not mean that every war is just, or that Christians should participate in any war their government commands simply because "God must have ordained it." This is a form of theological fatalism that Scripture consistently rejects.

(3) Provide certainty about divine approval. A nation's victory in war does not indicate that God approved of it. God brought Babylon to victory over Jerusalem while pronouncing Babylon's coming judgment.

On the other hand, God's sovereignty provides the Christian soldier with moral resources unavailable to secular military ethics: confidence that no act of justice done in his name is ultimately futile, humility before the limits of human moral vision, dependence on God's wisdom when ethical choices are genuinely difficult, and assurance of the future that God will ultimately bring perfect justice to bear on all human violence, including violence committed in ostensibly righteous causes.

The pastoral application for the Christian military chaplain is significant. The soldier under pastoral care needs both the comfort of divine sovereignty and the challenge of moral responsibility. Thus, God is neither absent from nor indifferent to the chaos of combat AND God holds each person accountable for specific choices, not merely for large-scale strategic decisions. The chaplain who collapses these into either fatalism ("God ordained everything, so nothing I do matters") or moralism ("God is watching your every choice and will punish every error") has failed in pastoral care. Holding sovereignty and responsibility in creative tension is the theologically and pastorally faithful path.

7.0 An Assessment Of Just War Theory Vs. Pacifism

7.1 Evaluating Pacifism's Strengths

Christian pacifism deserves serious engagement, not dismissal. These are the strengths of Pacifism.

First, pacifism takes Jesus's teaching in Matthew 5 with uncompromising seriousness. Jesus does not qualify the commands to turn the other cheek and love enemies as applying only to minor offenses; they are grounded in the character of God himself.

Second, pacifism is more consistent with the pre-Constantinian church's actual practice. Whatever the reasons for early Christian resistance to military service (pagan religious oaths, the eschatological urgency of the moment, principled nonviolence), that resistance must be accounted for.

Third, pacifism rightly insists that the church cannot simply baptize its nation's wars. Wars in history, including the Crusades, colonial wars of conquest, and WWI's catastrophic miscalculation, show that “just wars” were not really just, and they provide sobering evidence for pacifism's concern that just war theory can function as a permission slip rather than a constraint.

7.2 Evaluating Just War Theory's Strengths

Just War Theory, however, better accounts for the full biblical witness for several reasons.

First, canonical scope: Just War Theory engages the whole Bible, Old and New Testaments together. Pacifism tends to operate with a de facto canon within the canon that privileges the Sermon on the Mount while treating the entire Old Testament military tradition, and even Romans 13, as secondary. A hermeneutic that takes all of Scripture seriously must account for the extensive Old Testament testimony to godly warriors, divinely authorized violence, and God himself as a warrior.

Second, the apostolic silence on soldiers is exegetically significant. The New Testament contains at least three prominent examples of soldiers treated positively, with no suggestion that their military service is morally problematic: the centurion in Matthew 8, Cornelius in Acts 10, and the soldiers in Luke 3. If all military service were categorically sinful for Christians, the New Testament's failure to say so (or to demand that these men resign) would require an explanation that pacifists have not adequately provided.

Third, the neighbor-love argument carries genuine force. Richard Hays, a pacifist New Testament scholar, acknowledges that what he calls "the problem of the violent defense of the innocent" is the strongest objection to pacifism.[19] The obligation to love one's neighbor (Matt 22:39) is not discharged by standing by in principled nonresistance while one's neighbor is murdered. If anything, abandoning innocent people to violent aggressors in the name of personal moral purity is a form of self-righteousness that contradicts the spirit of the gospel.

Finally, just war theory carries the weight of the Christian tradition. Augustine, Aquinas, Luther, Calvin, and the mainstream Protestant and Catholic traditions have consistently affirmed that restrained, purposeful military force is compatible with Christian discipleship. This does not settle the question by appeal to tradition alone, but the convergent judgment of the church's greatest theological minds should not be lightly dismissed.

7.3 Conclusion: The Most Defensible Position

When rigorously applied and guided by the spirit of the Sermon on the Mount, Just War Theory best accounts for the full biblical witness. The critical qualification is essential:

Just War Theory, divorced from enemy-love, genuine reluctance, grief over violence, and prophetic willingness to call unjust wars unjust, becomes a rubber stamp for national aggression.

Augustine's insistence that the inner disposition of love must govern even justified warfare remains the indispensable corrective.

The Christian who participates in Just War does so not with triumphalism but with gravity, grief, and the recognition that all violence (even morally justified violence) is a consequence of human sinfulness that Christ has come ultimately to redeem. The eschatological vision of Isaiah 2:4, that swords will be beaten into plowshares, remains the Christian's final horizon, even as the Christian navigates the moral complexities of the present fallen age.

8.0 Objections And Responses

Objection 1: "Jesus Explicitly Prohibited Violence; Christians Cannot Use Lethal Force Under Any Circumstances"

This objection, most forcefully advanced by Yoder and Hauerwas, rests on a reading of Matthew 5:38-48 as a categorical prohibition of lethal force by Christians. The response has several components.

First, as exegeted above, Matthew 5 addresses personal retaliation and vengeance, not all use of force in every context. The cultural context of a "slap on the right cheek" was a personal insult, not mortal combat. Second, Jesus's own actions do not support absolute nonresistance: he made a whip and drove money-changers from the Temple (John 2:15), an act of forceful disruption that is not easily categorized as "turning the other cheek." Third, as argued above, Romans 13:4 explicitly affirms the government's authority to bear the sword. Pacifist interpretations consistently struggle to handle this text. Fourth, the apostolic treatment of centurions without demanding resignation is a strong argument from silence. If all military service were prohibited, the New Testament's silence on this point would be inexplicable.

Objection 2: "Just War Theory Has Never Actually Prevented a War; It Is a Theological Fiction That Legitimizes State Violence"

This objection, frequently raised by both pacifists and political realists, has genuine historical force. The Crusades were waged under the Just War rationale. World War I was blessed by clergy on both sides. The doctrine has demonstrably failed to prevent catastrophic wars. Does this not invalidate it?

The response is that the abuse of a moral framework does not invalidate the framework itself. The abuse of medical ethics does not invalidate medicine; the corruption of judicial processes does not invalidate justice. Just War Theory is best understood not as a mechanical test that, once passed, authorizes unlimited violence, but as a set of moral constraints and a disposition of moral seriousness that must be applied rigorously and proactively. When Just War criteria are ignored or corrupted, the fault lies with those who corrupted them, not with the criteria themselves. The solution to the abuse of Just War Theory is more rigorous application, not abandonment.

Furthermore, Just War Theory has functioned as a genuine moral constraint in some historical instances: the development of international humanitarian law (the Geneva Conventions), the Nuremberg principles, and contemporary military ethics codes all draw explicitly on Just War reasoning.

Objection 3: "The God of the Old Testament Who Commands Genocide Is Morally Monstrous; Christians Cannot Worship Such a God"

This objection, associated with the new atheist critique and with Marcionite tendencies in Christianity, requires a robust theological response.

First, as argued above, the conquest accounts almost certainly employ hyperbolic ANE rhetorical conventions. "Total destruction" signifies military defeat, not systematic genocide.

Second, the moral framework for evaluating the conquest must account for the extreme nature of Canaanite sin—child sacrifice, sexual violence, and systematic idolatry—for which God had already waited four centuries.

Third, God is the just sovereign Lord of all life, including human life: "The LORD kills and brings to life; he brings down to Sheol and raises up" (1 Sam 2:6). A God who does not exercise judgment is not morally superior but morally indifferent. Those who object to divine judgment must explain what a truly just God should do in the face of four centuries of child sacrifice.

Fourth, the conquest was unique and unrepeatable. God never again issues a herem command after the conquest period. The charge of "monstrous" requires the objector to explain why a single instance of extraordinary divine judgment within a specific historical and theological context renders God permanently monstrous rather than demonstrating that God takes sin seriously.

Objection 4: "Christians Who Serve in the Military Are Compromised; Their Primary Loyalty Is to the State, Not to Christ"

This objection, often voiced in pacifist circles, holds that military service inevitably corrupts Christian discipleship by demanding ultimate loyalty to the national authority.

The response acknowledges the genuine danger while rejecting the conclusion. Christians are called to "obey God rather than men" (Acts 5:29) in all spheres of life. A Christian physician, lawyer, or government official faces analogous temptations to subordinate kingdom ethics to professional or institutional demands. The solution is not to prohibit Christians from all such professions but to cultivate a discipleship that maintains primary loyalty to Christ in every sphere.

Critically, the Christian soldier's obligation to refuse immoral orders, including those that violate Just War criteria, is both morally required and legally recognized (Nuremberg precedent). A Christian military chaplain's role includes precisely this prophetic function: speaking truth to power within military institutions, counseling soldiers on moral injury and conscience, and upholding kingdom ethics in a military context. Christian military service, properly conceived, is not capitulation to state idolatry but a vocation that requires extraordinary moral courage.

Objection 5: "Pacifism Is Naive; It Cannot Deal with Hitler, ISIS, or Genocide; It Is Ethically Irresponsible"

Niebuhr's objection to pacifism in the face of Nazi aggression remains perhaps the most powerful critique ever directed against the position. The pacifist who refuses to endorse armed intervention against genocidal violence appears to prioritize personal moral purity over the lives of innocent people.

Pacifists offer several responses. Yoder argues that the question "what would you do if someone threatened your family?" isolates a worst-case scenario that overlooks the systemic social conditions that produce violence, conditions that a nonviolent Christian community actively addresses.[20] Hauerwas argues that the "problem of Hitler" is itself a sign of Christianity's failure: if the church had been what it was called to be, the conditions that produced National Socialism would not have obtained.[21]

These responses are intellectually interesting, but they ultimately do not answer the immediate pastoral and moral question facing a Christian soldier, statesman, or chaplain: given that Hitler is now in power and exterminating Jews, what is the morally faithful Christian response? The pacifist response to pray, witness, suffer, and trust God is not morally wrong, but it is insufficient as a complete Christian political ethic. The neighbor-love obligation to actively protect the innocent provides the just war theorist with a morally coherent response that the pacifist position structurally cannot offer.

Several Conclusions

First, the Bible does not speak with a single, simple voice on war. The Old Testament contains extensive testimony to divinely authorized warfare, divine-warrior imagery, and godly men who served as soldiers. The New Testament emphasizes enemy-love, nonretaliation, and the kingdom's spiritual character. A responsible Christian theology of war must hold these in creative tension rather than choosing one strand and dismissing the other.

Second, the conquest narratives in Joshua, though deeply challenging, are best understood through a combination of the literal-historical (unique divine judgment), typological (redemptive-historical shadow), and hyperbolic genre approaches. They cannot be invoked to justify modern religious violence, nor can they be reduced to mere mythology or attributed to Israel's theological misunderstanding.

Third, Matthew 5 and Romans 13 are not irreconcilably contradictory. Matthew 5 governs personal ethics and the inner disposition behind all Christian action, while Romans 13 describes the God-ordained function of government. The Christian who participates in state force (Romans 13) must do so with the spirit of enemy-love and grief that Matthew 5 requires.

Fourth, God's sovereignty over history, including the history of warfare, does not diminish human moral responsibility. Christians are called to exercise rigorous moral discernment about participation in specific wars and acts of violence, trusting in God's sovereignty while rejecting fatalism.

Fifth, Just War Theory, when rigorously applied and guided by the spirit of the Sermon on the Mount, best accounts for the full biblical witness. It takes the God-ordained authority of government seriously, the neighbor-love obligation to protect the innocent, and the extensive biblical testimony to godly warriors—while maintaining the constraints of proportionality, discrimination, legitimate authority, and right intention. Christian pacifism's insistence on taking Jesus's teaching seriously is a genuine and important corrective to just war theory's perennial temptation toward abuse, but pacifism's structural inability to account for the full canon and to answer the "neighbor-love in extremis" objection prevents it from serving as the complete Christian theology of war.

Sixth, the local church must be a community that pastorally cares for soldiers, veterans, conscientious objectors, and Gold Star families with equal faithfulness. It should affirm the vocation of restrained military service while prophetically challenging all forms of national idolatry, glorification of violence, and war crimes.

The Christian's final word on war is neither endorsement nor naive pacifism, but eschatological hope: "He shall judge between the nations, and shall decide disputes for many peoples; and they shall beat their swords into plowshares, and their spears into pruning hooks; nation shall not lift up sword against nation, neither shall they learn war anymore" (Isa 2:4). Until that day, the Christian navigates the moral complexities of warfare as a citizen of the coming kingdom, bearing the sword if necessary, yet always longing for and working toward the day when no sword will be needed.

Notes

[1] R. T. France, The Gospel of Matthew, New International Commentary on the New Testament (Grand Rapids: Eerdmans, 2007), 218.

[2] Christopher J. H. Wright, The God I Don't Understand: Reflections on Tough Questions of Faith (Grand Rapids: Zondervan, 2008), 90-92.

[3] Augustine, The City of God Against the Pagans, ed. and trans. R. W. Dyson (Cambridge: Cambridge University Press, 1998), 19.7.

[4] Thomas Aquinas, Summa Theologica, Vol. II, Part II, Question 40, Article 1, trans. Fathers of the English Dominican Province (New York: Benziger Brothers, 1947), 1354-1355.

[5] Brian Orend, The Morality of War, 2nd ed. (Peterborough, ON: Broadview Press, 2013), 160-189.

[6] John Howard Yoder, The Politics of Jesus: Vicit Agnus Noster, 2nd ed. (Grand Rapids: Eerdmans, 1994), 51.

[7] Stanley Hauerwas, The Peaceable Kingdom: A Primer in Christian Ethics (Notre Dame: University of Notre Dame Press, 1983), 99.

[8] Tertullian, "On Idolatry," in The Ante-Nicene Fathers, Vol. 3, ed. Alexander Roberts and James Donaldson (Peabody, MA: Hendrickson, 1994), 19.

[9] Reinhold Niebuhr, Moral Man and Immoral Society: A Study in Ethics and Politics (New York: Scribner, 1932), xii.

[10] Reinhold Niebuhr, "Why the Christian Church Is Not Pacifist," in Christianity and Power Politics (New York: Scribner, 1940), 6.

[11] Eric A. Seibert, Disturbing Divine Behavior: Troubling Old Testament Images of God (Minneapolis: Fortress Press, 2009), 27-29.

[12] Daniel L. Gard, "The Case for Eschatological Continuity," in Show Them No Mercy: Four Views on God and Canaanite Genocide, ed. Stanley N. Gundry (Grand Rapids: Zondervan, 2003), 121-125.

[13] Paul Copan and Matthew Flannagan, Did God Really Command Genocide? Coming to Terms with the Justice of God (Grand Rapids: Baker Books, 2014), 88-101.

[14] John T. Noonan, Canons and Canonists in Context (Goldbach: Keip Verlag, 1995), 224.

[15] John Howard Yoder, What Would You Do? A Serious Answer to a Standard Question (Scottdale, PA: Herald Press, 1983), 23-41.

[16] Darrell Cole, When God Says War Is Right: The Christian's Perspective on When and How to Fight (Colorado Springs: WaterBrook Press, 2002), 45-50.

[17] Stanley Hauerwas, War and the American Difference: Theological Reflections on Violence and National Identity (Grand Rapids: Baker Academic, 2011), 43.

[18] Walter Wink, Engaging the Powers: Discernment and Resistance in a World of Domination (Minneapolis: Fortress Press, 1992), 65-85.

[19] Richard B. Hays, The Moral Vision of the New Testament: A Contemporary Introduction to New Testament Ethics (San Francisco: HarperSanFrancisco, 1996), 342.

[20] Yoder, What Would You Do?, 45.

[21] Hauerwas, War and the American Difference, 71.