Deuteronomy 7:22

He slowly will dislodge these nations before you, but he won't destroy them quickly, so the wild animals won't multiply around you.

Exodus 23:29-30

I won't drive them out before you in a single year, so that the land does not become desolate and so that wild animals do not overrun you.

Joshua 15:63

Now as for the Jebusites who lived in Jerusalem, the descendants of Judah could not expel them, so Jebusites live with the descendants of Judah in Jerusalem to this day.

Treasury of Scripture Knowledge

Summary

And the LORD thy God will put out those nations before thee by little and little: thou mayest not consume them at once, lest the beasts of the field increase upon thee.

General references

Bible References

Thou mayest

Exodus 23:29
I won't drive them out before you in a single year, so that the land does not become desolate and so that wild animals do not overrun you.
Joshua 15:63
Now as for the Jebusites who lived in Jerusalem, the descendants of Judah could not expel them, so Jebusites live with the descendants of Judah in Jerusalem to this day.

General references

Deuteronomy 11:23
then the LORD will dispossess all these nations before you and you'll dispossess nations that are even greater and stronger than you.
Joshua 21:44
The LORD gave them peace all around them, just as he had promised their ancestors. Not one of their enemies was able to oppose them the LORD placed all of their enemies under their control.

International Standard Version Copyright © 1996-2008 by the ISV Foundation.