Leviticus 20:24-26

²⁴But to you I say: Possess their land which I will give you for an inheritance, a land flowing with milk and honey. I am the Lord your God, who have separated you from other people.

²⁵Therefore do you also separate the clean beast from the unclean, and the clean fowl from the unclean: defile not your souls with beasts, or birds, or any things that move on the earth, and which I have shewn you to be unclean.

²⁶You shall be holy unto me, because I the Lord am holy, and I have separated you from other people, that you should be mine.