Leviticus 20:22-26

22“‘You must be sure to obey all my statutes and regulations, so that the land to which I am about to bring you to take up residence there does not vomit you out.

23You must not walk in the statutes of the nation which I am about to drive out before you, because they have done all these things and I am filled with disgust against them.

24So I have said to you: You yourselves will possess their land and I myself will give it to you for a possession, a land flowing with milk and honey. I am the Lord your God who has set you apart from the other peoples.

25Therefore you must distinguish between the clean animal and the unclean, and between the unclean bird and the clean, and you must not make yourselves detestable by means of an animal or bird or anything that creeps on the ground – creatures I have distinguished for you as unclean.

26You must be holy to me because I, the Lord, am holy, and I have set you apart from the other peoples to be mine.