Deuteronomy 13:8-10

New Catholic Bible

⁸ the gods of the people living around us, whether they be near or far, wherever they are upon the whole face of the earth, ⁹ you are not to agree to do this with him or even listen to him. You must show him no pity, you should not spare or conceal him. ¹⁰ You must put him to death. You must be the first to lay hands on him to put him to death, and then all of the people after you.