Numbers 33:50-55

Then the LORD spoke to Moses in the plains of Moab by the Jordan opposite Jericho, saying, “Speak to the sons of Israel and say to them, ‘When you cross over the Jordan into the land of Canaan, then you shall drive out all the inhabitants of the land from before you, and destroy all their figured stones, and destroy all their molten images and demolish all their high places; and you shall take possession of the land and live in it, for I have given the land to you to possess it. You shall inherit the land by lot according to your families; to the larger you shall give more inheritance, and to the smaller you shall give less inheritance. Wherever the lot falls to anyone, that shall be his. You shall inherit according to the tribes of your fathers. But if you do not drive out the inhabitants of the land from before you, then it shall come about that those whom you let remain of them will become as pricks in your eyes and as thorns in your sides, and they will trouble you in the land in which you live.