- Leviticus 18 BSB ↗
Families pass on their rules about marriage long before anyone reads a law book: who is too close to marry, what is never done, what brings shame on the whole household. Those unwritten lists run deep in Indian life too, and they differ from community to community. Leviticus 18 writes Israel's list down. It opens not with a prohibition but with a line about identity — you are not Egypt, where you came from, and you will not be Canaan, where you are going. Then it names, bluntly and one after another, the sexual relationships a holy people must not enter.
Where it sits in the story: The Holiness Code (Leviticus 17–26) carries holiness out of the sanctuary and into the home. Chapter 18 applies it to sex and family, where the book claims the nations around Israel had gone badly wrong. Its warning — the land itself will vomit out a people who live this way — frames the later story of conquest and exile. Jesus, Paul and the rabbis all engage with this chapter, and it remains one of the most debated in the Bible today.
What this chapter is doing: To define the boundaries of sexual and family life for a people set apart, protecting the household from incest and adultery, and to warn that the land will not tolerate the practices it forbids.
- 18:1–5 — God tells Israel not to follow the practices of Egypt or of Canaan, but to keep his laws, 'by which a person will live' — a line Paul later quotes.
- 18:6–18 — No sexual relations with close relatives: parents, step-parents, siblings and half-siblings, grandchildren, aunts, in-laws, or a woman and her daughter. A man may not also marry his wife's sister while his wife lives. The list protects the family from within.
- 18:19–23 — Further prohibitions: intercourse during menstruation, sex with a neighbour's wife, giving children to be sacrificed to the god Molech, a man lying with a male as with a woman (called an abomination), and sex with animals.
- 18:24–30 — The nations before Israel defiled themselves and the land by these things, and the land vomited them out. Israel — and the foreigners living with them — must keep these laws, or the same will happen to them.
Key verse: Leviticus 18:5 · So what: The chapter plainly forbids incest, adultery, child sacrifice, bestiality and sex between men, and it treats these as matters of holiness, not private taste. Jews and Christians read and apply it differently: Orthodox Judaism holds these prohibitions binding; many Christians see them as moral law confirmed in the New Testament; others, in both traditions, reinterpret verse 22 in light of its setting. Readers should know what it says before deciding what it means for them.