Exodus 23:29

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

Deuteronomy 7:22

And the LORD thy God will drive 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.

Joshua 15:63

As for the Jebusites, the inhabitants of Jerusalem, the children of Judah could not expel them: but the Jebusites dwell with the children of Judah at Jerusalem to this day.

Joshua 16:10

And they did not expel the Canaanites that dwelt in Gezer: but the Canaanites dwell among the Ephraimites to this day, and serve under tribute.

Joshua 17:12-13

Yet the children of Manasseh could not expel the inhabitants of those cities; but the Canaanites would dwell in that land.

Judges 3:1-4

Now these are the nations which the 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 the LORD thy God will drive 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.
Joshua 15:63
As for the Jebusites, the inhabitants of Jerusalem, the children of Judah could not expel them: but the Jebusites dwell with the children of Judah at Jerusalem to this day.
Joshua 16:10
And they did not expel the Canaanites that dwelt in Gezer: but the Canaanites dwell among the Ephraimites to this day, and serve under tribute.
Joshua 17:12
Yet the children of Manasseh could not expel the inhabitants of those cities; but the Canaanites would dwell in that land.
Judges 3:1
Now these are the nations which the 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 cast out all thy enemies from before thee, as the LORD hath spoken.
Deuteronomy 11:23
Then will the LORD drive out all these nations from before you, and ye shall possess greater nations and mightier than yourselves.
Deuteronomy 31:4
And the LORD shall do to them as he did to Sihon, and to Og, kings of the Amorites, and to the land of them, whom he destroyed.
Joshua 17:12
Yet the children of Manasseh could not expel the inhabitants of those cities; but the Canaanites would dwell in that land.
Joshua 21:43
And the LORD gave to Israel all the land which he swore to give to their fathers: and they possessed it, and dwelt in it.