Deuteronomy 13:6-11

“If your brother, the son of your mother, or your son or daughter, or the wife you cherish, or your friend who is as [precious to you as] your own life (soul), entices you secretly, saying, ‘Let us go and serve other gods’ (gods whom neither you nor your fathers have known, of the gods of the peoples who are around you, near you or far from you, from one end of the earth to the other), you shall not consent to him or listen to him; and your eye shall not pity him, nor shall you spare him or conceal him. Instead, you shall most certainly execute him; your hand shall be first [to be raised] against him to put him to death, and afterwards the hand of all the people. So you shall stone him to death with stones, because he has tried to draw you away from the LORD your God who brought you from the land of Egypt, from the house of slavery. Then all Israel will hear and be afraid, and will never again do such a wicked thing among you.