What Does the Torah Say About Killing? A Comparative Religious Overview

The Torah's stance on killing is anchored in one of the Ten Commandments, appearing twice in the Hebrew text: lo tirtzach — typically translated 'thou shalt not kill' but more precisely rendered 'thou shalt not murder.' Exodus 20:13 Deuteronomy 5:17 The Hebrew root ratzach (Strong's H7523) specifically denotes unlawful killing, meaning the commandment targets murder rather than all forms of taking life.

This distinction matters enormously in rabbinic interpretation. The Torah itself permits capital punishment, warfare, and killing in self-defense — categories that fall outside the prohibition. Deuteronomy 27:25 reinforces the moral gravity of unjust killing from another angle: 'Cursed be he that taketh reward to slay an innocent person.' Deuteronomy 27:25 This verse targets contract killing or judicial corruption — condemning those who pervert justice to cause an innocent death.

The Mishnah in tractate Sanhedrin reflects how seriously the rabbis took extrajudicial killing, even permitting zealous intervention in certain extreme cases of public desecration — though these were tightly bounded exceptions, not general licenses. Mishnah Sanhedrin 9:6 Scholar Jacob Milgrom (writing in the late 20th century) argued that the Torah's homicide laws were revolutionary in the ancient Near East precisely because they rejected ransom as a substitute for justice in murder cases.

The broader legal framework of the Torah treats human life as bearing a sanctity that cannot be monetized or casually extinguished. Killing an innocent person carries a curse; killing through corrupt judicial means is equally condemned. Deuteronomy 27:25

Christianity receives the Torah's prohibition on killing as part of the moral law that Jesus himself affirmed. The commandment 'thou shalt not kill' appears in Deuteronomy 5:17 and is quoted directly in the New Testament by Jesus in Matthew 19:18. Deuteronomy 5:17 Christians have historically understood this commandment as binding on believers, though theological traditions diverge on its application to war, capital punishment, and self-defense.

The Deuteronomic curse on those who accept payment to kill the innocent — 'Cursed be he that taketh reward to slay an innocent person' — resonates strongly in Christian ethics as well, reinforcing the idea that human life holds intrinsic, God-given value. Deuteronomy 27:25 Augustine of Hippo (354–430 CE) and later Thomas Aquinas (1225–1274 CE) developed Just War theory partly in response to the tension between this commandment and the realities of governance and defense.

It's worth noting that Christian denominations disagree significantly here. Pacifist traditions like the Quakers and Mennonites read 'thou shalt not kill' as an absolute prohibition. Mainline Protestant and Catholic traditions allow for exceptions under just war and self-defense doctrines. The commandment's moral weight, however, is universally acknowledged across Christianity.

Islam isn't directly bound by the Torah, but the Quran articulates a strikingly parallel prohibition on unjust killing. Quran 17:33 states: 'And slay not the life which Allah hath forbidden save with right.' Quran 17:33 This mirrors the Torah's distinction between murder and lawful killing — both traditions permit killing under defined just circumstances while absolutely forbidding unjust taking of life.

The Quran goes further in 17:33 by addressing the rights of a murder victim's family, granting them legal authority while cautioning against excess in retaliation Quran 17:33 — a framework that parallels the Torah's concern with justice rather than vengeance. Ibn Abbas, one of the earliest Quranic commentators (d. 68 AH), clarified in a hadith recorded in Sahih al-Bukhari that intentional murder of a believer carries the punishment of Hell, though repentance remains a theological question debated among scholars. Sahih al Bukhari 3855

Islamic jurisprudence, like Jewish law, distinguishes categories of killing — murder (qatl al-amd), manslaughter, and lawful killing — echoing the Torah's nuanced legal framework even though the two traditions developed independently.

The Torah prohibits killing in the Decalogue: “Thou shalt not kill.” Exodus 20:13 It repeats this command in Deuteronomy, reinforcing its foundational status. Deuteronomy 5:17 It also pronounces a curse on anyone who takes a reward to slay an innocent person, underscoring the protection of innocent life. Deuteronomy 27:25 Later rabbinic discussions (not the Torah itself) show how Jewish law wrestled with edge cases and zealotry, indicating debate about application while upholding the Torah’s baseline. Mishnah Sanhedrin 9:6 Some later lists of severe offenses (karet) also frame communal gravity for related transgressions, though they address categories beyond homicide. Mishnah Keritot 1:1

Christians receive the same Torah command within their Old Testament: “Thou shalt not kill,” as reiterated in Deuteronomy’s Decalogue. Deuteronomy 5:17 The Torah also condemns killing the innocent via bribery, reflecting a concern for justice. Deuteronomy 27:25 Many Christian readings treat these as enduring moral norms grounded in the Torah’s explicit prohibitions. Exodus 20:13

Not applicable. Concerns Jewish Torah scripture; Islam addresses killing within the Qur’an rather than the Torah (e.g., Qur’an 17:33). Quran 17:33