Deuteronomy 13:12-17

When word comes in from one of your cities that GOD, your God, is giving you to live in, reporting that evil men have gotten together with some of the citizens of the city and have broken away, saying, “Let’s go and worship other gods” (gods you know nothing about), then you must conduct a careful examination. Ask questions, investigate. If it turns out that the report is true and this abomination did in fact take place in your community, you must execute the citizens of that town. Kill them, setting that city apart for holy destruction: the city and everything in it including its animals. Gather the plunder in the middle of the town square and burn it all—town and plunder together up in smoke, a holy sacrifice to GOD, your God. Leave it there, ashes and ruins. Don’t build on that site again. And don’t let any of the plunder devoted to holy destruction stick to your fingers. Get rid of it so that GOD may turn from anger to compassion, generously making you prosper, just as he promised your ancestors.