Exodus 23:29
I will not drive them out from before you in one year, lest the land become a waste, and the beast of the field multiply against you.
Deuteronomy 7:22
And Jehovah your God will put out those nations before you by little and little. You may not destroy them at once, lest the beasts of the field increase upon you.
Joshua 15:63
As for the Jebusites, the inhabitants of Jerusalem, the sons of Judah could not drive them out. But the Jebusites live with the sons of Judah at Jerusalem to this day.
Joshua 16:10
And they did not drive out the Canaanites who lived in Gezer. But the Canaanites live among the Ephraimites until this day, and serve under tribute.
Joshua 17:12-13
Yet the sons of Manasseh were not able to occupy these cities, but the Canaanites wanted to live in that land.
Judges 3:1-4
And these are the nations which Jehovah left, to prove Israel by them, as many as had not known all the wars of Canaan;