Now rise up, said I, and get you over the brook Zered. And we went over the brook Zered.

King James Translators' Notes

brook: or, valley

Jamieson-Fausset-Brown Bible Commentary

13. Now rise up, and get you over the brook Zered-The southern border of Moab, Zered ("woody"), now Wady Ahsy, separates the modern district of Kerak from Jebal, and, indeed, forms a natural division of the country between the north and south. Ar, called in later times Rabbah, was the capital of Moab and situated twenty-five miles south of the Arnon on the banks of a small but shady stream, the Beni Hamed. It is here mentioned as representative of the country dependent on it, a rich and well-cultivated country, as appears from the numerous ruins of cities, as well as from the traces of tillage still visible on the fields.

Matthew Henry's Concise Commentary

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.