Leviticus 20:23

20 If a man lies with his uncle’s wife, he has uncovered his uncle’s nakedness. They shall bear their sin. They shall die childless.

21 “‘If a man takes his brother’s wife, it is an impurity. He has uncovered his brother’s nakedness. They shall be childless.

22 “‘You shall therefore keep all my statutes and all my ordinances, and do them, that the land where I am bringing you to dwell may not vomit you out.

23 You shall not walk in the customs of the nation which I am casting out before you; for they did all these things, and therefore I abhorred them.

24 But I have said to you, “You shall inherit their land, and I will give it to you to possess it, a land flowing with milk and honey.” I am the LORD your God, who has separated you from the peoples.

25 “‘You shall therefore make a distinction between the clean animal and the unclean, and between the unclean fowl and the clean. You shall not make yourselves abominable by animal, or by bird, or by anything with which the ground teems, which I have separated from you as unclean for you.

26 You shall be holy to me, for I, the LORD, am holy, and have set you apart from the peoples, that you should be mine.