Deuteronomy 7:22
The LORD your God will drive out these nations before you little by little. You will not be enabled to eliminate them all at once, or the wild animals would multiply around you.
Berean Standard Bible
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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.
The LORD your God will cast out those nations before you little by little. You may not consume them at once, lest the animals of the field increase on you.