Deuteronomy 13:8-10

American Standard Version

⁸ thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him: ⁹ but thou shalt surely kill him; thy hand shall be first upon him to put him to death, and afterwards the hand of all the people. ¹⁰ And thou shalt stone him to death with stones, because he hath sought to draw thee away from Jehovah thy God, who brought thee out of the land of Egypt, out of the house of bondage.