It happened, as they fled from before Israel, while they were at the descent of Beth Horon, that Yahweh cast down great stones from the sky on them to Azekah, and they died: they were more who died with the hailstones than they whom the children of Israel killed with the sword.
So God demonstrated here in a very powerful way, His interest, His presence, to Joshua and to the people.Now having conquered these kings, they really at this point conquered the major enemies within the land. The major conquests were made all at this one shot when these kings came out against them. So from there on, it was almost like going out and mopping up. "