Deuteronomy 13:11

8 you shall not consent to him, nor listen to him; neither shall your eye pity him, neither shall you spare, neither shall you conceal him:

9 but you shall surely kill him; your hand shall be first on him to put him to death, and afterwards the hand of all the people.

10 You shall stone him to death with stones, because he has sought to draw you away from Yahweh your God, who brought you out of the land of Egypt, out of the house of bondage.

11 All Israel shall hear, and fear, and shall not do any more such wickedness as this is in the midst of you.

12 If you shall hear tell concerning one of your cities, which Yahweh your God gives you to dwell there, saying,

13 Certain base fellows are gone out from the midst of you, and have drawn away the inhabitants of their city, saying, Let us go and serve other gods, which you have not known;

14 then shall you inquire, and make search, and ask diligently; and, behold, if it be truth, and the thing certain, that such abomination is done in the midst of you,