13. pitched on the other side of Arnon—now El-Mojib, a deep, broad, and rapid stream, dividing the dominions of the Moabites and Amorites.

     19. Aroer—on the north bank of the Arnon, a city of Ammon (De 2:36; 3:12). As it was on "the way" of the Moabites who fled into the desert, its inhabitants "ask" what is the occasion of Moab's flight, and so learn the lot that awaits themselves (compare 1Sa 4:13, 16).