Isaiah 21:13 - Joseph Benson’s Commentary on the Old and New Testaments

The burden of Arabia “While God revealed to his prophet the fate of foreign nations, among others he declares that of those Arabians who inhabited the western part of Arabia Deserta, or Petrea,” and bordered upon the Idumeans last mentioned. They are here termed the companies of Dedanim, being the descendants of Dedan, the son of Jokshan, the son of Abraham by Keturah; and travelling companies, because a great number of them used to travel together the same way, as now companies travelling together in those parts are called caravans. In saying, In the forest shall ye lodge, the prophet foretels that they should be driven into flight by the Assyrians, or that that populous country should be turned into a desolate wilderness.