Exodus 23:23, 28-31

For my angel will go before you and bring you into the land of the Amorites, Hittites, Perizzites, Canaanites, Hivites, and Jebusites, so you may live there. And I will destroy them completely.

I will send terror ahead of you to drive out the Hivites, Canaanites, and Hittites. But I will not drive them out in a single year, because the land would become desolate and the wild animals would multiply and threaten you. I will drive them out a little at a time until your population has increased enough to take possession of the land. And I will fix your boundaries from the Red Sea to the Mediterranean Sea, and from the eastern wilderness to the Euphrates River. I will hand over to you the people now living in the land, and you will drive them out ahead of you.