13 "Now then, proceed to cross over the Wadi Zered." So we crossed over the Wadi Zered. 14 And the length of time we had traveled from Kadesh-barnea until we crossed the Wadi Zered was thirty-eight years, until the entire generation of warriors had perished from the camp, as the Lord had sworn concerning them. 15 Indeed, the Lord's own hand was against them, to root them out from the camp, until all had perished. 16 Just as soon as all the warriors had died off from among the people, 17 the Lord spoke to me, saying, 18 "Today you are going to cross the boundary of Moab at Ar.
Matthew Henry's Commentary on Deuteronomy 2:13-18
Commentary on Deuteronomy 2:8-23
(Read Deuteronomy 2:8-23)
We have the origin of the Moabites, Edomites, and Ammonites. Moses also gives an instance older than any of these; the Caphtorims drove the Avims out of their country. These revolutions show what uncertain things wordly possessions are. It was so of old, and ever will be so. Families decline, and from them estates are transferred to families that increase; so little continuance is there in these things. This is recorded to encourage the children of Israel. If the providence of God has done this for Moabites and Ammonites, much more would his promise do it for Israel, his peculiar people. Cautions are given not to meddle with Moabites and Ammonites. Even wicked men must not be wronged. God gives and preserves outward blessings to wicked men; these are not the best things, he has better in store for his own children.