Deuteronomy 13:6-9

BBE(i) 6 If your brother, the son of your mother, or your son or your daughter or the wife of your heart, or the friend who is as dear to you as your life, working on you secretly says to you, Let us go and give worship to other gods, strange to you and to your fathers; 7 Gods of the peoples round about you, near or far, from one end of the earth to the other; 8 Do not be guided by him or give attention to him; have no pity on him or mercy, and give him no cover; 9 But put him to death without question; let your hand be the first stretched out against him to put him to death, and then the hands of all the people.