Deuteronomy 13:13-18

13 that certain base fellows have gone out among you and have drawn away the inhabitants of the city, saying, 'Let us go and serve other gods,' which you have not known,
14 then you shall inquire and make search and ask diligently; and behold, if it be true and certain that such an abominable thing has been done among you,
15 you shall surely put the inhabitants of that city to the sword, destroying it utterly, all who are in it and its cattle, with the edge of the sword.
16 You shall gather all its spoil into the midst of its open square, and burn the city and all its spoil with fire, as a whole burnt offering to the LORD your God; it shall be a heap for ever, it shall not be built again.
17 None of the devoted things shall cleave to your hand; that the LORD may turn from the fierceness of his anger, and show you mercy, and have compassion on you, and multiply you, as he swore to your fathers,
18 if you obey the voice of the LORD your God, keeping all his commandments which I command you this day, and doing what is right in the sight of the LORD your God.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.