Leviticus 20:25-27

Amplified Bible

²⁵ You are therefore to make a distinction between the [ceremonially] clean animal and the unclean, and between the unclean bird and the clean; and you shall not make yourselves detestable by animal or by bird or by anything that crawls on the ground, which I have set apart from you as unclean. ²⁶ You are to be holy to Me; for I the Lord am holy, and have set you apart from the peoples (nations) to be Mine.

²⁷ ‘A man or woman who is a medium [who pretends to consult the dead] or who is a spiritist shall most certainly be put to death, and be stoned with stones; their blood is on them.’”