Leviticus 20
24 Ref But I have said to you, You will take their land and I will give it to you for your heritage, a land flowing with milk and honey: I am the Lord your God who have made you separate from all other peoples.
25 Ref So then, make division between the clean beast and the unclean, and between the clean bird and the unclean: do not make yourselves disgusting by any beast or bird or anything which goes flat on the earth, which has been marked by me as unclean for you.
26 Ref And you are to be holy to me; for I the Lord am holy and have made you separate from the nations, so that you may be my people.