Deuteronomy 7:22

King James 3 - The Literal Traslation

And Jehovah your God will clear out those nations before you by little and little. You may not finish them at once, lest the beasts of the field increase upon you.

Cross References

Deuteronomy 9:3

And know today that Jehovah your God is He who passes over before you as a consuming fire; He will destroy them, and He will bring them down before you; so you shall dispossess them and make them to perish quickly, as Jehovah has spoken to you.

Joshua 15:63

As for the Jebusites, the ones living in Jerusalem, the sons of Judah could not dispossess them. But the Jebusites dwell with the sons of Judah at Jerusalem to this day.