Exodus 23:29

I will not drive them out from before you in one year, lest the land become a waste, and the beast of the field multiply against you.

Deuteronomy 7:22

And Jehovah your God will put out those nations before you by little and little. You may not destroy them at once, lest the beasts of the field increase upon you.

Joshua 15:63

As for the Jebusites, the inhabitants of Jerusalem, the sons of Judah could not drive them out. But the Jebusites live with the sons of Judah at Jerusalem to this day.

Joshua 16:10

And they did not drive out the Canaanites who lived in Gezer. But the Canaanites live among the Ephraimites until this day, and serve under tribute.

Joshua 17:12-13

Yet the sons of Manasseh were not able to occupy these cities, but the Canaanites wanted to live in that land.

Judges 3:1-4

And these are the nations which Jehovah left, to prove Israel by them, as many 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 Jehovah your God will put out those nations before you by little and little. You may not destroy them at once, lest the beasts of the field increase upon you.
Joshua 15:63
As for the Jebusites, the inhabitants of Jerusalem, the sons of Judah could not drive them out. But the Jebusites live with the sons of Judah at Jerusalem to this day.
Joshua 16:10
And they did not drive out the Canaanites who lived in Gezer. But the Canaanites live among the Ephraimites until this day, and serve under tribute.
Joshua 17:12
Yet the sons of Manasseh were not able to occupy these cities, but the Canaanites wanted to live in that land.
Judges 3:1
And these are the nations which Jehovah left, to prove Israel by them, as many as had not known all the wars of Canaan;

General references

Deuteronomy 6:19
to cast out all your enemies from before you, as Jehovah has spoken.
Deuteronomy 11:23
then Jehovah will drive out all these nations from before you, and you shall possess greater and mightier nations than you.
Deuteronomy 31:4
And Jehovah shall do to them as He did to Sihon and to Og, kings of the Amorites, and to the land of those whom He destroyed.
Joshua 17:12
Yet the sons of Manasseh were not able to occupy these cities, but the Canaanites wanted to live in that land.
Joshua 21:43
And Jehovah gave to Israel all the land which He swore to give to their fathers. And they possessed it, and lived in it.