Leviticus 20:10, 23, 27

“If a man commits adultery with his neighbor’s wife, both the man and the woman who have committed adultery must be put to death.

Do not live according to the customs of the people I am driving out before you. It is because they do these shameful things that I detest them.

“Men and women among you who act as mediums or who consult the spirits of the dead must be put to death by stoning. They are guilty of a capital offense.”