Yahweh confused them before Israel, and he killed them with a great slaughter at Gibeon, and chased them by the way of the ascent of Beth Horon, and struck them to Azekah, and to Makkedah.
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. "