Even though they have hired lovers among the nations, I will soon gather them together for judgment. Then they will begin to waste away under the oppression of a mighty king.
These were the nations the Lord permitted to remain so he could use them to test Israel – he wanted to test all those who had not experienced battle against the Canaanites.
He left those nations simply because he wanted to teach the subsequent generations of Israelites, who had not experienced the earlier battles, how to conduct holy war.