Deuteronomy 2:14-16

14And the space in which we came from Kadesh–barnea, until we were come over the brook Zered, was thirty and eight years; until all the generation of the men of war were wasted out from among the host, as the Lord sware unto them.1 15For indeed the hand of the Lord was against them, to destroy them from among the host, until they were consumed.

16So it came to pass, when all the men of war were consumed and dead from among the people,