Leviticus 20:6, 7, 27

“ ‘I will set my face against anyone who turns to mediums and spiritists to prostitute themselves by following them, and I will cut them off from their people.

“ ‘Consecrate yourselves and be holy, because I am the LORD your God.

“ ‘A man or woman who is a medium or spiritist among you must be put to death. You are to stone them; their blood will be on their own heads.’ ”