Leviticus 20:23-26

You must not live according to the customs of the nations I am going to drive out before you. Because they did all these things, I abhorred them. But I said to you, "You will possess their land; I will give it to you as an inheritance, a land flowing with milk and honey." I am the LORD your God, who has set you apart from the nations.

" 'You must therefore make a distinction between clean and unclean animals and between unclean and clean birds. Do not defile yourselves by any animal or bird or anything that moves along the ground—those which I have set apart as unclean for you. You are to be holy to me because I, the LORD, am holy, and I have set you apart from the nations to be my own.