Because. An elliptical beginning. Mr. Cheyne supposes some such words as "Lament for Moab," or "Alas for Moab!" to have been in the writer's mind, but to have been omitted through "lyrical excitement."
In the night. This is best taken literally. Night attacks, though not common in antiquity, were not unknown. Mesha, King of Moab, boasts that he "went in the night" against Nebo, and assaulted it at early dawn (Moabite Stone, I.
15). Ar of Moab; or, Ar-Moab. An ancient city, mentioned among those taken from the Moabites by Sihon (Numbers 21:28). According to Jerome, it was called in Roman times Areopolis, or Rabbath-Moab. Modern geographers identify it with Rabba, a place on the old Roman road between Kerak and Arair, south of the Amen, where there are some ancient remains, though they are not very extensive.
Is laid waste, and brought to silence; rather, is stormed, is ruined. Kir of Moab. "Kir of Moab" is reasonably identified with Kerak, a place very strongly situated on a mountain peak, about ten miles flora the south-eastern corner of the Dead Sea.