Numbers 14:33-35

33Your children will be shepherds in the wilderness for forty years, and they will suffer for your unfaithfulness until the last of your bodies lies in the wilderness. 34In keeping with the forty days you spied out the land, you shall bear your guilt forty years—a year for each day—and you will experience My alienation.

35I, the LORD, have spoken, and I will surely do these things to this entire wicked congregation, which has conspired against Me. They will meet their end in the wilderness, and there they will die.”