Leviticus 20:25 in the King James Version
Ye shall therefore put difference between clean beasts and unclean, and between unclean fowls and clean: and ye shall not make your souls abominable by beast, or by fowl, or by any manner of living thing that creepeth on the ground, which I have separated from you as unclean.
Context
24 But I have said to you, “You shall inherit their land, and I will give it to you to possess it, a land flowing with milk and honey.” I am the LORD your God, who has separated you from the peoples.
25 “‘You shall therefore make a distinction between the clean animal and the unclean, and between the unclean fowl and the clean. You shall not make yourselves abominable by animal, or by bird, or by anything with which the ground teems, which I have separated from you as unclean for you.
26 You shall be holy to me, for I, the LORD, am holy, and have set you apart from the peoples, that you should be mine.