Matthew Henry on 1 Chronicles 5:1-17
We have here an extract out of the genealogies,
I. Of the tribe of Reuben, where we have,
1. The reason why this tribe is thus postponed. It is confessed that Reuben was the first-born of Israel, and, upon that account, might challenge the precedency; but he forfeited his birthright by defiling his father's concubine, and was, for that, sentenced not to excel, Gen 49:4. Sin lessens men, thrusts them down from their excellency. Seventh-commandment sins especially leave an indelible stain upon men's names and families, a reproach which time will not wipe away. Reuben's seed, to the last, bear the disgrace of Reuben's sin. Yet, though that tribe was degraded, it was not discarded or disinherite…
Read the whole note in the consoleJamieson-Fausset-Brown on 1 Chronicles 5:9
Eastward he inhabited unto the entering in of the wilderness from the river Euphrates--The settlement was on the east of Jordan, and the history of this tribe, which never took any part in the public affairs or movements of the nation, is comprised in "the multiplication of their cattle in the land of Gilead," in their wars with the Bedouin sons of Hagar, and in the simple labors of pastoral life. They had the right of pasture over an extensive mountain range--the great wilderness of Kedemoth (Deu 2:26) and the Euphrates being a security against their enemies.
Adam Clarke on 1 Chronicles 5:10
And they dwelt in their tents - The Hagarites were tribes of Nomade, or Scenite, Arabs; people who lived in tents, without any fixed dwellings, and whose property consisted in cattle. The descendants of Reuben extirpated these Hagarites, seized on their property and their tents, and dwelt in their place.
John Gill on 1 Chronicles 5:10
And in the days of Saul they made war with the Hagarites,.... Not with the Hungarians, as the Targum, a people not then in being; but the Ishmaelites, so called because they descended from Hagar (s), Sarah's maid; the same that are placed by Pliny (t) and Ptolemy (u) in Arabia, near the Batanaeans, or inhabitants of Bashan; with those the Reubenites made war, in conjunction with the Gadites and half tribe of Manasseh, 1 Chronicles 5:18, perhaps this war might be much about the time Saul relieved Jabeshgilead, and beat the Ammonites, 1 Samuel 11:1 by which the tribes on that side Jordan might be encouraged to it:
who fell by their hand; were worsted and conquered by them:
and they dwelt in…