Deuteronomy 13:6-9 ▼

6 Suppose 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,

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

8 You 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.

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