Deuteronomy 13:9-11

but you shall surely kill him; your hand shall be first against him to put him to death, and afterward the hand of all the people. And you shall stone him with stones until he dies, because he sought to entice you away from the LORD your God, who brought you out of the land of Egypt, from the house of bondage. So all Israel shall hear and fear, and not again do such wickedness as this among you.