Deuteronomy 13:8-10

Amplified Bible

⁸ 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. ⁹ 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. ¹⁰ 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.