Leviticus 20:22-27 - You Shall Be Holy
22 You shall therefore keep all My statutes and all My judgments, and do them, so that the land where I bring you to live shall not spit you out. 23 And you shall not walk in the ways of the nation which I cast out before you. For they committed all these things, and therefore I loathed them. 24 But I have said to you, You shall inherit their land, and I, I am giving it to you to possess it, a land that flows with milk and honey. I am Jehovah your God, who has separated you from the nations. 25 And you shall make a difference between clean animals and unclean, and between unclean fowls and clean. And you shall not defile your souls by beast, or by fowl, or by any kind of living thing that creeps on the ground, which I have separated from you as unclean. 26 And you shall be holy to Me. For I, Jehovah, am holy, and have severed you from the nations, so that you should be Mine.
27 A man also or woman that has a medium or that is a necromancer, shall surely be put to death. They shall stone them with stones. Their blood is on them.