Judges 2:21-23

21So I will not chase out the nations that are still living in the land. They are the people who were still there when Joshua died.

22I will use those nations to test the Israelites. I will see if my people will live carefully, in the way that I have shown them. That is the way that their ancestors lived.’

23So the Lord let some of the Canaanite nations continue to live in the land. He did not chase them all away. He did not put them all under Joshua's power.