Deuteronomy 2

8-18. we passed . . . through the way of the plain--the Arabah or great valley, from Elath ("trees") (the Ailah of the Greeks and Romans). The site of it is marked by extensive mounds of rubbish.
Ezion-geber--now Akaba, both were within the territory of Edom; and after making a circuit of its southeastern boundary, the Israelites reached the border of Moab on the southeast of the Salt Sea. They had been forbidden by divine command to molest the Moabites in any way; and this special honor was conferred on that people not on their own account, for they were very wicked, but in virtue of their descent from country on the south, and partly on the north of the Arnon. They had won it by their arms from the original inhabitants, the Emims, a race, terrible, as their name imports, for physical power and stature ( Genesis 14:5 ), in like manner as the Edomites had obtained their settlement by the overthrow of the original occupiers of Seir, the Horims ( Genesis 14:6 ), who were troglodytes, or dwellers in caves. Moses alluded to these circumstances to encourage his countrymen to believe that God would much more enable them to expel the wicked and accursed Canaanites. At that time, however, the Moabites, having lost the greater part of their possessions through the usurpations of Sihon, were reduced to the small but fertile region between the Zered and the Arnon.

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.

16. all the men of war were consumed and dead from among the people--The outbreak at Kadesh on the false report of the spies had been the occasion of the fatal decree by which God doomed the whole grown-up population to die in the wilderness [ Numbers 14:29 ]; but that outbreak only filled up the measure of their iniquities. For that generation, though not universally abandoned to heathenish and idolatrous practices, yet had all along displayed a fearful amount of ungodliness in the desert, which this history only hints at obscurely, but which is expressly asserted elsewhere ( Ezekiel 20:25 Ezekiel 20:26 , Amos 5:25 Amos 5:27 , Acts 7:42 Acts 7:43 ).

19-37. when thou comest nigh over against the children of Ammon, distress them not, nor meddle with them--The Ammonites, being kindred to the Moabites, were, from regard to the memory of their common ancestor, to remain undisturbed by the Israelites. The territory of this people had been directly north from that of Moab. It extended as far as the Jabbok, having been taken by them from a number of small Canaanitish tribes, namely, the Zamzummins, a bullying, presumptuous band of giants, as their name indicates; and the Avims, the aborigines of the district extending from Hazerim or Hazeroth (El Hudhera) even unto Azzah (Gaza), but of which they had been dispossessed by the Caphtorim (Philistines), who came out of Caphtor (Lower Egypt) and settled in the western coast of Palestine. The limits of the Ammonites were now compressed; but they still possessed the mountainous region beyond the Jabbok ( Joshua 11:2 ). What a strange insight does this parenthesis of four verses give into the early history of Palestine! How many successive wars of conquest had swept over its early state--what changes of dynasty among the Canaanitish tribes had taken place long prior to the transactions recorded in this history!

24-36. Rise ye up . . . and pass over the river Arnon--At its mouth, this stream is eighty-two feet wide and four deep. It flows in a channel banked by perpendicular cliffs of sandstone. At the date of the Israelitish migration to the east of the Jordan, the whole of the fine country lying between the Arnon and the Jabbok including the mountainous tract of Gilead, had been seized by the Amorites, who, being one of the nations doomed to destruction (see Deuteronomy 7:2 , 20:16 ), were utterly exterminated. Their country fell by right of conquest into the hands of the Israelites. Moses, however, considering this doom as referring solely to the Amorite possessions west of Jordan, sent a pacific message to Sihon, requesting permission to go through his territories, which lay on the east of that river. It is always customary to send messengers before to prepare the way; but the rejection of Moses' request by Sihon and his opposition to the advance of the Israelites ( Numbers 21:23 , Judges 11:26 ) drew down on himself and his Amorite subjects the predicted doom on the first pitched battlefield with the Canaanites. It secured to Israel not only the possession of a fine and pastoral country, but, what was of more importance to them, a free access to the Jordan on the east.