Deuteronomy 13:6-11

6Suppose your own full brother, your son, your daughter, your beloved wife, or your closest friend should seduce you secretly and encourage you to go and serve other gods that neither you nor your ancestors have previously known,

7the gods of the surrounding people (whether near you or far from you, from one end of the earth to the other).

8You must not give in to him or even listen to him; do not feel sympathy for him or spare him or cover up for him.

9Instead, you must kill him without fail! Your own hand must be the first to strike him, and then the hands of the whole community.

10You must stone him to death because he tried to entice you away from the Lord your God, who delivered you from the land of Egypt, that place of slavery.

11Thus all Israel will hear and be afraid; no longer will they continue to do evil like this among you.