Joshua 11:13-15

Yet Israel did not burn any of the cities built on their mounds—except Hazor, which Joshua burned. The Israelites carried off for themselves all the plunder and livestock of these cities, but all the people they put to the sword until they completely destroyed them, not sparing anyone that breathed. As the LORD commanded his servant Moses, so Moses commanded Joshua, and Joshua did it; he left nothing undone of all that the LORD commanded Moses.