Leviticus 20:22-26

22Ye shall therefore keep all my statutes, and all my judgments, 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 the LORD your God, which have separated you from the peoples.

25Ye shall therefore separate 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 fowl, or by any thing wherewith the ground teemeth, which I have separated from you as unclean.

26And ye shall be holy unto me: for I the LORD am holy, and have separated you from the peoples, that ye should be mine.