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.
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.
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.
Joshua 16:10
And the Canaanites who were living in Gezer were not forced out; but the Canaanites have been living among Ephraim, to this day, as servants, doing forced work.
Joshua 17:12-13
But the children of Manasseh were not able to make the people of those towns go out; but the Canaanites would go on living in that land.
Judges 3:1-4
Now these are the nations which the Lord kept in the land for the purpose of testing Israel by them, all those who had had no experience of all the wars of Canaan;