The sons of Reuel; Nahath, Zerah, Shammah, and Mizzah.

Jamieson-Fausset-Brown Bible Commentary

37. Reuel-a powerful branch of the great Aeneze tribe, the Rowalla Arabs.

Shammah-the great tribe Beni Shammar. In the same way, the names of the other kings and dukes are traced in the modern tribes of Arabia. But it is unnecessary to mention any more of these obscure nomads, except to notice that Jobab (1Ch 1:44), one of the kings of Edom, is considered to be Job, and that his seat was in the royal city of Dinahab (Ge 36:32; 1Ch 1:43), identified with O'Daeb, a well-known town in the center of Al Dahna, a great northern desert in the direction of Chaldea and the Euphrates [Forster].

Matthew Henry's Concise Commentary

28-54 The genealogy is from hence confined to the posterity of Abraham. Let us take occasion from reading these lists of names, to think of the multitudes that have gone through this world, have done their parts in it, and then quitted it. As one generation, even of sinful men, passes away, another comes. Ec 1:4; Nu 32:14, and will do so while the earth remains. Short is our passage through time into eternity. May we be distinguished as the Lord's people.