The Principle
The Eighth Commandment - "Thou shalt not steal" (Exodus 20:15) - is one of the most legally consequential of the Ten Commandments. Its prohibition of theft presupposes and thereby implicitly validates private property: you cannot steal what belongs to no one. Western property law, from the Roman law of the Digest through the canon law of the medieval church through Locke's natural rights theory through Blackstone's Commentaries, has repeatedly grounded the right to property in this divine prohibition, treating the ownership of property as a biblically established right that civil law must protect rather than create. The Eighth Commandment and the biblical narratives of property in the Old Testament - including Naboth's vineyard (1 Kings 21) - established the principle that even royal power cannot arbitrarily confiscate private property.
Biblical Foundation
Exodus 20:15 in the KJV: "Thou shalt not steal." The commandment is among the shortest statutory formulations in all of ancient law, yet its implications are profound. By prohibiting theft, it presupposes a right of ownership that the law must protect - you steal from someone who has a legitimate prior claim. Deuteronomy 5:19 repeats the commandment in the context of the Sinai covenant renewal, reinforcing its status as a binding legal obligation grounded in the divine will. The narrative of Naboth's vineyard in 1 Kings 21 is the most dramatically vivid illustration of the commandment's scope: Naboth refuses to sell his ancestral land to King Ahab, citing the Torah's provisions protecting inheritance. When Jezebel arranges Naboth's judicial murder to seize the vineyard, the prophet Elijah denounces the king in God's name. Even the king cannot lawfully confiscate private property - the Eighth Commandment protects Naboth's ownership against royal appropriation. Deuteronomy 19:14 - "Thou shalt not remove thy neighbour's landmark, which they of old time have set in thine inheritance" - extended the property protection to boundary markers, making illegal encroachment a violation of biblical law.
Historical Transmission
Thomas Aquinas, in the Summa Theologiae, derived the right to private property from natural law while acknowledging its social dimensions - property is held privately but must be used for the common good. Aquinas cited the Eighth Commandment as positive divine confirmation of what natural reason already establishes. John Locke, in the Second Treatise of Government (1689), developed the most influential modern theory of property rights: labour mixed with natural resources creates property rights that pre-exist and constrain civil government. Locke grounded this in a theological framework - God gave the earth to humankind in common, but the law of nature (which is the law of God) also gives individuals property rights through labour. His argument drew on both the Eighth Commandment and the Genesis creation narrative. Sir William Blackstone, whose Commentaries (1765) shaped American property law, opened his discussion of property by citing the divine grant of dominion in Genesis 1:28 and the Eighth Commandment as the foundations of the common law's protection of ownership.
Modern Application
Constitutional protections of property - the Fifth Amendment's Takings Clause ("nor shall private property be taken for public use, without just compensation"), Article 1 Protocol 1 of the European Convention on Human Rights - represent the legal institutionalisation of the principle the Eighth Commandment established. The requirement of just compensation for government expropriation is the Naboth's vineyard principle translated into constitutional law: even the sovereign cannot seize private property without providing fair value. Contemporary debates about regulatory takings, eminent domain abuse, and asset forfeiture laws all engage the fundamental question of where the boundary lies between legitimate state regulation of property and the commandment's prohibition of taking what belongs to another. The biblical tradition's protection of Naboth's ancestral land against royal power remains one of the most resonant precedents in the history of property rights.
Scholarly Debate
Scholars debate whether the Eighth Commandment's presupposition of property rights implies a libertarian or a social view of ownership. Stephen Mott and Ronald Sider argue in Biblical Ethics and Social Change that the biblical property tradition, taken as a whole - including the Jubilee legislation of Leviticus 25 and the gleaning laws - implies significant redistribution requirements that limit the absolute character of private property. Gary North's biblical economics argues for a more libertarian reading of the commandment, treating it as an absolute prohibition on involuntary redistribution. The debate reflects a genuine tension in the biblical tradition between the protection of individual ownership (the Eighth Commandment, Naboth's vineyard) and the cyclical redistribution of wealth (Jubilee, sabbatical year debt forgiveness) that prevents the permanent concentration of property. Both poles are present in Scripture, and the law that emerges from the tradition requires holding both in tension.