Joshua 11:1-5, 10-11

When King Jabin of Hazor heard what had happened, he sent messages to the following kings: King Jobab of Madon; the king of Shimron; the king of Acshaph; all the kings of the northern hill country; the kings in the Jordan Valley south of Galilee; the kings in the Galilean foothills; the kings of Naphoth-dor on the west; the kings of Canaan, both east and west; the kings of the Amorites, the Hittites, the Perizzites, the Jebusites in the hill country, and the Hivites in the towns on the slopes of Mount Hermon in the land of Mizpah. All these kings came out to fight. Their combined armies formed a vast horde. And with all their horses and chariots, they covered the landscape like the sand on the seashore. The kings joined forces and established their camp around the water near Merom to fight against Israel.

Joshua then turned back and captured Hazor and killed its king. (Hazor had at one time been the capital of all these kingdoms.) The Israelites completely destroyed every living thing in the city, leaving no survivors. Not a single person was spared. And then Joshua burned the city.