John Gill Bible Commentary

Moab is confounded, for it is broken down,.... This is the answer returned, by those that had escaped and were fleeing, to those who inquired of them; who report that the whole country of Moab was in the utmost confusion and consternation; not being able to stand before the enemy, who broke down and destroyed all that was in his way: and therefore calls upon them to howl and cry; because of the general ruin at the nation, and who must expect themselves to share the same fate; and therefore should prepare themselves and their neighbours for it, as follows: tell ye it in Arnon, that Moab is spoiled; the country of Arnon, so called from a river of that name, on the banks of which Aroer was situated; the inhabitants of which are desired to spread it all over that part of the country, that Moab was utterly ruined by the Chaldean army; the particulars of which follow: