Leviticus 20:6-7, 27

“If a person turns to mediums and necromancers, whoring after them, I will set my face against that person and will cut him off from among his people. Consecrate yourselves, therefore, and be holy, for I am the LORD your God.

“A man or a woman who is a medium or a necromancer shall surely be put to death. They shall be stoned with stones; their blood shall be upon them.”