The account of David’s years as a fugitive from King Saul is not merely a narrative of patience and piety — it is the single most developed biblical case study in lawful armed resistance against unjust sovereign authority. In the framework of Lex Rex, Samuel Rutherford treats David’s defensive conduct as dispositive proof that a subject may lawfully take up arms against a king who has abandoned his office as protector and instead become a persecutor. The precedent anchors much of the broader argument in Lex Rex and feeds directly into the later development of resistance theory that shaped Reformed political theology for centuries.
David as Armed Fugitive, Not Passive Victim
The critical detail Rutherford emphasizes is that David was not unarmed. When David fled Saul’s court, he went first to Nob and took Goliath’s sword — a battlefield weapon, not a ceremonial artifact. He then gathered around himself a company of men that grew to approximately four hundred and eventually to several thousand armed warriors (1 Samuel 22:1–2, 1 Chronicles 12). These were organized, trained, and equipped fighting men, not a loose band of refugees. David established defensive positions in the wilderness of Judah, at Keilah, at En Gedi, and at Ziklag, and he conducted intelligence operations, moved tactically to avoid encirclement, and repeatedly evaded Saul’s pursuit through deliberate military decision-making.
This is not the picture of a man who believed armed self-defense against a king was inherently sinful. The text of Lex Rex argues that David’s entire posture during these years was one of organized, armed, defensive resistance — the very thing later theorists would call the right of the inferior magistrate and the private person to resist tyrannical force.
The Distinction Between Resistance and Rebellion
The theological precision of the argument rests on a distinction that runs through all of Reformation political theology: there is a categorical difference between lawful defensive resistance and unlawful rebellion. David never sought Saul’s throne by force. He never launched an offensive campaign to depose the king. He never claimed the right to rule before God’s timing. On the famous occasions when he had opportunity to kill Saul — in the cave at En Gedi and in the camp at Ziph — he refused. He would not “stretch out his hand against the Lord’s anointed.”
But refusing to assassinate the king is not the same as refusing to defend oneself against the king’s violence. David did both simultaneously: he declined to take Saul’s life and he maintained an armed force capable of repelling Saul’s attacks. Rutherford treats this combination as the model for all lawful resistance. The goal of defensive arms is self-preservation, not vengeance. The moral line is drawn not at the presence of weapons but at the intent behind their use. This distinction would later become foundational to Calvin’s doctrine of lesser magistrates and to the broader argument in Vindiciae Contra Tyrannos.
Divine Approval as Theological Warrant
A key strand of the argument is that God approved David’s conduct during this period — not merely tolerated it but actively endorsed it. When David inquired of the Lord whether to go to Keilah to defend its inhabitants against the Philistines, God answered and directed him (1 Samuel 23:1–5). When David needed to know whether Saul would pursue him, God answered again. The Spirit of God is described as coming upon Amasai when he pledged allegiance to David’s cause (1 Chronicles 12:18). The text of Lex Rex argues that if David’s armed posture had been sinful — if maintaining a military force in defiance of the king’s will were inherently unlawful — God would not have answered his prayers, directed his movements, or blessed those who joined him.
This argument matters because the opposing royalist position held that all resistance to a sitting king was rebellion against God’s ordinance (Romans 13). Rutherford counters that God’s own conduct toward David during the years of Saul’s persecution demonstrates the opposite: a king who persecutes the innocent has departed from the function that makes him “God’s minister,” and resistance to such a king is not resistance to God’s ordinance but defense of it. The king who hunts his own subjects is the one violating the divine order, not the subjects who refuse to die passively.
The King as Tyrant vs. the King as Ruler
Underlying the David-and-Saul case study is Rutherford’s broader framework on kingship and tyranny. A king rules by covenant — a conditional grant of authority from God mediated through the consent of the people. When the king honors that covenant, obedience is owed. When the king violates it by turning the sword of office against innocent subjects, he acts not as king but as tyrant, and the obligation of passive submission dissolves. Saul’s pursuit of David was not an exercise of lawful royal authority — David had committed no crime, broken no law, and posed no threat to the kingdom. Saul acted from personal jealousy and demonic influence, making his pursuit an act of private murder cloaked in royal prerogative.
Rutherford’s treatment thus establishes a test for lawful resistance: the subject must have a just cause (genuine persecution, not mere political disagreement), the resistance must be defensive in character (preservation of life, not seizure of power), and the aim must be restoration of lawful order rather than personal advancement. David met all three criteria. He was innocent of wrongdoing, he fought only to survive, and he consistently deferred to God’s timing for the transfer of authority.
Implications for the Prepared Citizen
This biblical precedent carries forward through the tradition of Protestant political theology into the founding principles of the American republic. The argument that subjects may lawfully resist a government that has become tyrannical — that self-defense against unjust force is not rebellion but duty — is the argument made in the Declaration of Independence and embedded in the Sixth Commandment’s relationship to the Second Amendment. David did not wait for Saul to repent; he armed himself, organized his men, and defended his life while maintaining moral restraint. The framework that emerges from this precedent pairs armed capability with moral discipline, readiness without aggression, and action in defense of life within the boundaries of lawful self-defense.
The David precedent also bears on the argument for armed citizenship: the mere possession and organized use of arms is not inherently sinful or rebellious. What matters is purpose. Arms carried for lawful defense of self and neighbor, within a framework of moral accountability, are — in the tradition Rutherford articulates — not only permissible but commended.