The LORD’s anger burned against Israel; and he said, “Because this nation transgressed my covenant which I commanded their fathers, and has not listened to my voice, I also will no longer drive out any of the nations that Joshua left when he died from before them; that by them I may test Israel, to see if they will keep the LORD’s way to walk therein, as their fathers kept it, or not.”
So the LORD left those nations, without driving them out hastily.
He didn’t deliver them into Joshua’s hand.