The question of whether Christians may lawfully defend themselves—and resist tyrannical government—is not a modern invention. It stretches back to the earliest centuries of the church, where theologians, bishops, and ordinary believers wrestled with the tension between Christ’s command to turn the other cheek and the natural human obligation to preserve innocent life. Getting the early church’s position right matters because nearly every subsequent argument about armed citizenship, resistance theory, and the moral legitimacy of self-defense depends on whether the Christian tradition condemned defensive force from the beginning or whether the picture is far more complex than pacifist readings suggest.
The Patristic Sources: Not a Single Voice
Samuel Rutherford, writing in Lex Rex, directly engages the church fathers to demonstrate that early Christian teaching does not universally prohibit defensive resistance. He examines writers like Cyprian, Tertullian, and Ambrose—names that span from the second through fourth centuries—and finds a range of positions rather than monolithic pacifism.
Tertullian is the figure most commonly cited in support of absolute Christian non-resistance. Rutherford acknowledges Tertullian’s personal stance against armed defense but contextualizes it carefully: Tertullian’s later years were spent under the influence of Montanism, a rigorist movement that the broader church ultimately rejected as heretical. More importantly, Tertullian wrote during an era when Christians were a persecuted minority under pagan emperors—a political situation that made organized armed resistance practically impossible and strategically suicidal. His views on resistance, then, reflect both personal theological error and specific historical constraints rather than a universal Christian doctrine binding on all believers in all ages.
Ambrose, by contrast, represents a different strand of early thought. Writing after Christianity became the religion of the Roman Empire, Ambrose affirmed the duty of magistrates to defend their people and recognized the legitimacy of defensive warfare. Glenn Sunshine’s Slaying Leviathan traces this trajectory explicitly, noting that from its earliest formulations, Christianity defined inalienable individual rights and constrained the reach of civil government—a framework that necessarily implies limits on what a ruler may demand and what a subject must endure.
The Shift Under Christian Commonwealths
A critical distinction in Rutherford’s argument separates the pre-Constantinian and post-Constantinian eras. Under heathen emperors, Christians often chose to suffer rather than resist—not because resistance was inherently sinful, but because the circumstances of a tiny minority under hostile pagan rule made it impractical and because many early Christians believed their suffering served as a witness. This historical reluctance was particular to their situation, not a timeless moral absolute.
Once Christianity became established within the political order—once Christian commonwealths existed—the picture changed dramatically. Rutherford cites concrete historical examples: Christians sought military assistance from Emperor Constantine against the persecutions of Licinius, and Christian communities appealed to Emperor Theodosius for protection against Persian oppression. These were not aberrations from the faith; they were the church operating within its own political theology, recognizing that Christian princes had a duty to defend their people and that Christian peoples had a right to seek that defense.
This distinction is foundational for the entire tradition of Reformation political theology. If the early church universally and permanently forbade all defensive action, then Calvinist and Presbyterian resistance theory has no root. But if the early church’s apparent pacifism was situational rather than doctrinal, the door opens for a robust theology of lawful defense—exactly the door Rutherford walks through.
Self-Defense as Natural Law
Rutherford grounds the right of self-defense not merely in biblical proof texts but in natural law itself. Individuals are, by the created order, “naturally closer and dearer to their own lives than to others.” The instinct toward self-preservation is not sin; it is a feature of how God made human beings. From this foundation, Rutherford draws a sharp moral distinction: killing in self-defense is lawful because it aims to preserve innocent life, whereas killing from malice constitutes murder regardless of the political status of the killer.
This framework establishes that the law of self-defense operates independently of obedience to authority. A Christian may submit patiently to unjust suffering in one sense—refusing to curse or revile an oppressor—while simultaneously defending his own life when directly attacked. Scripture’s commands regarding patient endurance concern deportment—the manner and spirit of one’s response—not a binding of one’s hands against preservation of life. The servant who is “buffeted unjustly” is told not to curse back, but nowhere is he told to stand motionless while being murdered.
This same natural-law reasoning extends from the individual to the community. A people conquered and oppressed by the sword may lawfully act to recover their lost liberty—just as the judges of Israel rose against Moab and against Jabin of Canaan. The parallel to the biblical narrative is deliberate: Israel’s subjection to foreign oppressors under divine providence did not grant those oppressors a permanent moral right to tyrannize. Rutherford draws the comparison to Christ’s crucifixion itself—though Christ was commanded by the Father to suffer death, this divine command did not retroactively make Herod’s and Pilate’s actions lawful. Divine permission for an event and moral warrant to commit it are entirely separate categories.
From Ancient Doctrine to Modern Application
Understanding these early Christian foundations is not merely academic. The argument that self-defense is grounded in natural law and affirmed (not contradicted) by the church’s earliest traditions undergirds the entire worldview connecting armed citizenship to moral duty. When the state fails to protect its citizens, the question of whether a citizen may lawfully take up arms in defense of life and community is not new. It is the same question Cyprian, Ambrose, and Rutherford all addressed.
The historical pattern of democide—government-perpetrated murder of civilians, a term coined by R.J. Rummell—gives additional weight to the patristic concern with limiting civil authority. If rulers can become the very threat to innocent life they were ordained to prevent, then a theology that leaves the citizen entirely disarmed before the state is not faithfulness but a misreading of the tradition.
The proportionality requirement matters as well. Rutherford insists that defensive actions must be proportionate and necessary: they must aim at preventing imminent harm, not at revenge after the fact. Actions taken after one is already mortally wounded are vengeance, not defense. This distinction mirrors modern legal standards of reasonable force and imminent threat—the same standards at issue in self-defense cases where courts must determine whether a defender acted lawfully. The early Christian framework, properly understood, is the ancestor of these legal principles.
Connection to Broader Resistance Theory
The early church’s teaching on self-defense forms the theological substratum beneath everything that follows in Protestant resistance theory. Calvin’s doctrine of lesser magistrates, [[History & Philosophy/Protestant Resistance Theory/Lex Rex_ The Law and the King by Samuel Rutherford|Rutherford’s Lex Rex]], and the [[History & Philosophy/Protestant Resistance Theory/Vindiciae Contra Tyrannos_ A Defense of Liberty Against Tyrants|Vindiciae Contra Tyrannos]] all build on the premise that Christian teaching does not require unconditional submission to tyranny. That premise rests on the patristic evidence examined here.
The practical implications flow forward into the American founding: the Presbyterian tradition of resistance carried these theological convictions directly into the colonial struggle for independence. And they flow into the present: the moral case for the connection between the Sixth Commandment and the Second Amendment depends on whether the duty to protect innocent life is genuinely grounded in the oldest layers of Christian thought—or is merely a modern rationalization. The patristic record demonstrates it is the former.
For citizens seeking to understand the legal dimensions of these principles in contemporary application, the framework connecting natural-law self-defense to modern statutes is explored in Second Amendment jurisprudence and the law of self-defense.