Numbers 26:65

26:65 For the Lord had said of them, “They will surely die in the wilderness.” And there was not left a single man of them, except Caleb son of Jephunneh and Joshua son of Nun.

Numbers 33:55

33:55 But if you do not drive out the inhabitants of the land before you, then those whom you allow to remain will be irritants in your eyes and thorns in your side, and will cause you trouble in the land where you will be living.