Ar'oer. (ruins).
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, Deuteronomy 2:36; Deuteronomy 3:12; Deuteronomy 4:48; Joshua 12:2; Joshua 13:9; Joshua 13:16; Judges 11:26; 2 Kings 10:33; 1 Chronicles 5:8, but later again in possession of Moab. Jeremiah 48:19. It is the modern Ara'ir, upon the very edge of the precipitous north bank of the Wady Mojeb.
2. Aroer, "that is 'facing' Rahbah" (Rabbah of Ammon), a town built by and belonging to Gad. Numbers 32:34; Joshua 13:25; 2 Samuel 24:5. This is probably the place mentioned in Judges 11:33 which was shown in Jerome's time.
3. Aroer, in Isaiah 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 Samuel 30:28 perhaps Wady Ar'arah, on the road from Petra to Gaza.
More than 4,500 subjects and proper names are defined and analyzed with corresponding Scripture references. Bible students have used "Smith's Bible Dictionary" since its introduction in the 1880s, making it a trustworthy classic.Wikipedia
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