Deuteronomy 13:8

4 You are to follow the LORD your God and fear Him. Keep His commandments and listen to His voice; serve Him and hold fast to Him.

5 Such a prophet or dreamer must be put to death, because he has advocated rebellion against the LORD your God, who brought you out of the land of Egypt and redeemed you from the house of slavery; he has tried to turn you from the way in which the LORD your God has commanded you to walk. So you must purge the evil from among you.

6 If your very own brother, or your son or daughter, or the wife you embrace, or your closest friend secretly entices you, saying, “Let us go and worship other gods” (which neither you nor your fathers have known,

7 the gods of the peoples around you, whether near or far, whether from one end of the earth or the other),

8 you must not yield to him or listen to him. Show him no pity, and do not spare him or shield him.

9 Instead, you must surely kill him. Your hand must be the first against him to put him to death, and then the hands of all the people.

10 Stone him to death for trying to turn you away from the LORD your God, who brought you out of the land of Egypt, out of the house of slavery.

11 Then all Israel will hear and be afraid, and will never again do such a wicked thing among you.

12 If, regarding one of the cities the LORD your God is giving you to inhabit, you hear it said

Read all of Deuteronomy 13