The Principle
The Lex Aquilia (c. 286 BCE) is the Roman statute that established civil liability for damage wrongfully caused to another person's property. It is the origin of the Western law of delict (civil law) and the common law of torts. The Mosaic law contains a parallel and arguably earlier statutory framework for negligence liability in Exodus 21-22, requiring restitution when one's carelessness causes harm to another's animals or property. The structural parallels between Aquilian and Mosaic negligence law are striking and have been noted by scholars since the medieval period. When medieval canonists synthesised Roman and biblical law, they created a unified jurisprudence of civil liability whose dual sources - Roman statute and Mosaic precept - reinforced each other.
Biblical Foundation
Exodus 21:33-34 provides the biblical model of negligence liability: "And if a man shall open a pit, or if a man shall dig a pit, and not cover it, and an ox or an ass fall therein; The owner of the pit shall make it good, and give money unto the owner of them; and the dead beast shall be his." The liability here is civil (compensation, not punishment), strict (you owe regardless of malicious intent), and restitutionary (restore the value of the loss). Exodus 22:5-6 extends the principle to crop damage: "If a man shall cause a field or vineyard to be eaten, and shall put in his beast, and shall feed in another man's field; of the best of his own field, and of the best of his own vineyard, shall he make restitution." Leviticus 24:18 - "And he that killeth a beast shall make it good; beast for beast" - establishes the restitutionary principle that underlies tort law's compensatory aim. Deuteronomy 22:8 - "When thou buildest a new house, then thou shalt make a battlement for thy roof, that thou bring not blood upon thine house, if any man fall from thence" - creates a positive duty of care: failing to take reasonable precautions against foreseeable harm creates liability. This is a precise biblical formulation of the negligence standard.
Historical Transmission
The Lex Aquilia covered three chapters: killing a slave or quadruped, injuring a creditor's property, and injuring a slave or quadruped. The jurists of the Roman classical period (especially Ulpian) extended Aquilian liability through interpretation to cover a wide range of negligent damage. When Justinian's Digest (533 CE) preserved and systematised Roman law, Aquilian doctrine became the foundation of the civil law of delict. Medieval canon lawyers, working with both the Digest and Scripture, noted the parallels between Aquilian liability and the Exodus negligence provisions and treated them as mutual confirmation: both Roman and Mosaic law recognised that careless harm to another's property obligates compensation. Thomas Aquinas's treatment of commutative justice in the Summa Theologiae drew on both traditions to articulate a general principle of restorative obligation. The English common law's development of the tort of negligence - culminating in Donoghue v. Stevenson (1932), which established the "neighbour principle" - drew on the Aquilian tradition as transmitted through civil law learning, but its moral grounding was equally informed by biblical principles of neighbourly duty.
Modern Application
The modern law of torts or delict - which provides civil remedies for negligent damage - is the direct descendant of the Lex Aquilia, enriched by the canonical-biblical tradition's contribution of a moral framework centred on duty of care to one's neighbour. The landmark English case Donoghue v. Stevenson (1932) established the neighbour principle: "You must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour." Lord Atkin's formulation explicitly echoed the Great Commandment - "Who is my neighbour?" (Luke 10:29) - and grounded the duty of care in the same moral universe as the Good Samaritan parable. The civil law standard of "fault" (culpa) in Aquilian liability parallels the biblical distinction between intentional harm and negligent harm, both traditions insisting that carelessness causing loss is a form of wrongdoing that obligates compensation.
Scholarly Debate
Scholars debate whether the structural parallels between Lex Aquilia and Mosaic negligence law reflect direct influence, parallel development from a shared ancient Near Eastern legal culture, or coincidence. Reuven Yaron's research on ancient Near Eastern law demonstrated extensive parallels between biblical and Mesopotamian legal codes, suggesting that both Roman and Mosaic negligence law may draw on a shared ancient legal heritage rather than direct borrowing from each other. Bernard Jackson's Essays in Jewish and Comparative Legal History traces the methodological parallels between Talmudic legal reasoning and civil law casuistry, suggesting common functional responses to similar social problems. For contemporary tort law, the significance of the biblical tradition lies not primarily in direct textual influence but in the moral framework - neighbourly duty, proportional compensation, restitution rather than punishment - that it contributed through the canonical tradition to shape the ethical foundations of civil liability law.