Deuteronomy 13:14-16

New Century Version

¹⁴ Then you must ask about it, looking into the matter and checking carefully whether it is true. If it is proved that a hateful thing has happened among you, ¹⁵ you must kill with a sword everyone who lives in that city. Destroy the city completely and kill everyone in it, as well as the animals, with a sword. ¹⁶ Gather up everything those people owned, and put it in the middle of the city square. Then completely burn the city and everything they owned as a burnt offering to the Lord your God. That city should never be rebuilt; let it be ruined forever.