Deuteronomy 2:7, 14-15

GOD, your God, has blessed you in everything you have done. He has guarded you in your travels through this immense wilderness. For forty years now, GOD, your God, has been right here with you. You haven’t lacked one thing.

It took us thirty-eight years to get from Kadesh Barnea to the Brook Zered. That’s how long it took for the entire generation of soldiers from the camp to die off, as GOD had sworn they would. GOD was relentless against them until the last one was gone from the camp.