Deuteronomy Chapter 7, Verse 22

22: 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.— edit KJV text
22: He will consume these nations in thy sight by little and little and by degrees. Thou wilt not be able to destroy them altogether: lest perhaps the beasts of the earth should increase upon thee.— edit Douay text
22: And the Lord thy God shall consume these nations before thee by little and little: thou shalt not be able to consume them speedily, lest the land become desert, and the wild beasts of the field be multiplied against thee.— edit LXX text