Deuteronomy 13:13-16

13that scoundrels among you are leading their fellow citizens astray by saying, ‘Let us go worship other gods’—gods you have not known before.

14In such cases, you must examine the facts carefully. If you find that the report is true and such a detestable act has been committed among you,

15you must attack that town and completely destroy all its inhabitants, as well as all the livestock.

16Then you must pile all the plunder in the middle of the open square and burn it. Burn the entire town as a burnt offering to the Lord your God. That town must remain a ruin forever; it may never be rebuilt.