Numbers 14:33-35

33Your children will be herdsmen in the wilderness for 40 years. They will suffer because of your unfaithfulness until your corpses are consumed in the wilderness.

34For 40 years, corresponding to the number of the 40 days you explored the land—one year for each day—you will suffer for your iniquities and know My hostility.

35I, Adonai, have spoken and certainly will I do this to all this wicked community banding together against Me. In this wilderness they will meet their end and there they will die!”