Lex, Rex

Lex, Rex emerged from the constitutional crisis that engulfed Britain in the 1640s, as Parliament and King Charles I moved toward civil war over the fundamental question of political authority. Samuel Rutherford, a Scottish Presbyterian minister and professor at St. Andrews, wrote this treatise to defend the parliamentary cause against royalist claims of divine right monarchy. The work's Latin title means "Law is King," directly challenging the competing maxim "Rex Lex" ("The King is Law") that undergirded absolute monarchy.

Rutherford constructs a systematic argument that all legitimate political authority derives from God through the people, not directly through monarchs. He contends that rulers receive their power through a covenant with their subjects and remain accountable to both divine law and the community that elevated them. The treatise methodically dismantles theories of absolute monarchy by demonstrating that Scripture, natural law, and historical precedent all support limited government under law. Rutherford argues that when rulers violate their covenantal obligations and govern tyrannically, resistance becomes not merely permissible but obligatory. He develops sophisticated distinctions between the office of kingship, which deserves honor, and particular kings, who may forfeit their authority through persistent injustice.

Lex, Rex profoundly influenced Anglo-American constitutional thought, providing intellectual ammunition for both the English Civil War and later colonial resistance to British rule. The work was publicly burned after the Restoration in 1660, and Rutherford was charged with treason, though he died before trial. American revolutionaries drew extensively on Rutherford's covenant theory and arguments for lawful resistance. His integration of Reformed theology with political theory helped establish the principle that government exists under divine law rather than as its earthly embodiment.

Who should read this: Students of political theology and those interested in the Reformed tradition's contribution to constitutional government will find Rutherford's arguments essential, though readers seeking devotional material or practical spiritual guidance should look elsewhere.