Exodus 23:29-31

But I will not force all those people out in only one year. If I did, the land would become a desert and the wild animals would become too many for you. Instead, I will force those people out slowly, until there are enough of you to take over the land. “I will give you the land from the Red Sea to the Mediterranean Sea, and from the desert to the Euphrates River. I will give you power over the people who now live in the land, and you will force them out ahead of you.