Numbers 33:53

51Speak to the children of Israel, and tell them, “When you pass over the Jordan into the land of Canaan,

52then you shall drive out all the inhabitants of the land from before you, destroy all their stone idols, destroy all their molten images, and demolish all their high places.

53You shall take possession of the land, and dwell therein; for I have given the land to you to possess it.

54You shall inherit the land by lot according to your families; to the larger groups you shall give a larger inheritance, and to the smaller you shall give a smaller inheritance. Wherever the lot falls to any man, that shall be his. You shall inherit according to the tribes of your fathers.

55“But if you do not drive out the inhabitants of the land from before you, then those you let remain of them will be like pricks in your eyes and thorns in your sides. They will harass you in the land in which you dwell.