Deuteronomy 20:15

So shall you do to all the cities which are at a great distance from you, those which are not among the cities that you shall receive as a possession

Other versions

King James Version

Thus shalt thou do unto all the cities which are very far off from thee, which are not of the cities of these nations.

English Standard Version

Thus you shall do to all the cities that are very far from you, which are not cities of the nations here.

New International Version

This is how you are to treat all the cities that are at a distance from you and do not belong to the nations nearby.