Exodus 23:29

I will not drive them out from before thee in one year, lest the land become desolate, and the beasts of the field multiply against thee.

Deuteronomy 7:22

And LORD thy God will cast out those nations before thee little by little. Thou may not consume them at once, lest the beasts of the field increase upon thee.

Joshua 15:63

And as for the Jebusites, the inhabitants of Jerusalem, the sons of Judah could not drive them out, but the Jebusites dwell with the sons of Judah at Jerusalem to this day.

Joshua 16:10

And they did not drive out the Canaanites who dwelt in Gezer, but the Canaanites dwell in the midst of Ephraim to this day, and have become servants to do task work.

Joshua 17:12-13

Yet the sons of Manasseh could not drive out those cities, but the Canaanites would dwell in that land.

Judges 3:1-4

Now these are the nations which LORD left to prove Israel by them, (even as many [of Israel] as had not known all the wars of Canaan,

Treasury of Scripture Knowledge

Summary

I will not drive them out from before thee in one year; lest the land become desolate, and the beast of the field multiply against thee.

Bible References

In one year

Deuteronomy 7:22
And LORD thy God will cast out those nations before thee little by little. Thou may not consume them at once, lest the beasts of the field increase upon thee.
Joshua 15:63
And as for the Jebusites, the inhabitants of Jerusalem, the sons of Judah could not drive them out, but the Jebusites dwell with the sons of Judah at Jerusalem to this day.
Joshua 16:10
And they did not drive out the Canaanites who dwelt in Gezer, but the Canaanites dwell in the midst of Ephraim to this day, and have become servants to do task work.
Joshua 17:12
Yet the sons of Manasseh could not drive out those cities, but the Canaanites would dwell in that land.
Judges 3:1
Now these are the nations which LORD left to prove Israel by them, (even as many [of Israel] as had not known all the wars of Canaan,

General references

Deuteronomy 6:19
to thrust out all thine enemies from before thee, as LORD has spoken.
Deuteronomy 11:23
then will LORD drive out all these nations from before you, and ye shall dispossess nations greater and mightier than yourselves.
Deuteronomy 31:4
And LORD will do to them as he did to Sihon and to Og, the kings of the Amorites, and to their land, whom he destroyed.
Joshua 17:12
Yet the sons of Manasseh could not drive out those cities, but the Canaanites would dwell in that land.
Joshua 21:43
So LORD gave to Israel all the land which he swore to give to their fathers, and they possessed it, and dwelt in it.