Deuteronomy 7:22

The Lord your God will send out the nations before you little by little; they are not to be rooted out quickly, for fear that the beasts of the field may be increased overmuch against you.

Exodus 23:29-30

I will not send them all out in one year, for fear that their land may become waste, and the beasts of the field be increased overmuch against you.

Joshua 15:63

And as for the Jebusites living in Jerusalem, the children of Judah were unable to make them go out; but the Jebusites are living with the children of Judah at 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 will not send them all out in one year, for fear that their land may become waste, and the beasts of the field be increased overmuch against you.
Joshua 15:63
And as for the Jebusites living in Jerusalem, the children of Judah were unable to make them go out; but the Jebusites are living with the children of Judah at Jerusalem, to this day.

General references

Deuteronomy 11:23
Then the Lord will send these nations in flight before you, and you will take the lands of nations greater and stronger than yourselves.
Joshua 21:44
And the Lord gave them peace on every side, as he had said to their fathers: all those who were against them gave way before them, for the Lord gave them all up into their hands.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain