1. A city on the torrent Arnon, the southern point of the territory of Sihon king of the Amorites, and afterwards of the tribe of Reuben, Deut. 2:36; 3:12; 4:48; Josh. 12:2; 13:9, 16; Judges 11:26; 2 Kings 10:33; 1 Chron. 5:8, but later again in possession of Moab. Jer. 48:19. It is the modern Arâ˒ir, upon the very edge of the precipitous north bank of the Wady Mojeb.
2. Aroer, “that is ‘facing’ Rabbah” (Rabbah of Ammon), a town built by and belonging to Gad. Num. 32:34; Josh. 13:25; 2 Sam. 24:5. This is probably the place mentioned in Judges 11:33, which was shown in Jerome’s time.
3. Aroer, in Isa. 17:2, if a place at all, must be still farther north than either of the two already named.
4. A town in Judah, named only in 1 Sam. 30:28, perhaps Wady Ar˒ârah, on the road from Petra to Gaza.