Leviticus 20:20–26

²⁰And if a man shall lie with his uncle’s wife, he hath uncovered his uncle’s nakedness: they shall bear their sin; they shall die childless. ²¹And if a man shall take his brother’s wife, it is impurity: he hath uncovered his brother’s nakedness; they shall be childless.

²²Ye shall therefore keep all my statutes, and all mine ordinances, and do them; that the land, whither I bring you to dwell therein, vomit you not out. ²³And ye shall not walk in the customs of the nation, which I cast out before you: for they did all these things, and therefore I abhorred them. ²⁴But I have said unto you, Ye shall inherit their land, and I will give it unto you to possess it, a land flowing with milk and honey: I am Jehovah your God, who hath separated you from the peoples. ²⁵Ye shall therefore make a distinction between the clean beast and the unclean, and between the unclean fowl and the clean: and ye shall not make your souls abominable by beast, or by bird, or by anything wherewith the ground teemeth, which I have separated from you as unclean. ²⁶And ye shall be holy unto me: for I, Jehovah, am holy, and have set you apart from the peoples, that ye should be mine.