Why does the prophet command a wail and cry to be told specifically 'beside the Arnon'?
The verse paints a vivid picture of total destruction. "Moab is put to shame, for it is broken" (v. 20a) signals a complete downfall for a nation known for its pride. The command to "wail and cry! Tell it beside the Arnon" isn't just a general announcement of defeat; it's a specific, geographically targeted lament.
A Border of Despair
The Arnon River marked a significant boundary for Moab. Telling the news by its banks meant spreading the message to those on the frontier, the first to hear and perhaps the last to escape. This geographical focus highlights the immediacy and widespread nature of the disaster. It's like shouting the news from the highest point of a city under siege – the message is meant for all to hear, especially those closest to the approaching enemy.
A Nation's Breaking Point
The word "broken down" speaks to more than just physical destruction of cities. It suggests the shattering of Moab's defenses, its political power, and its national pride. The shame comes from this utter collapse. The prophet directs the cry to the Arnon region, emphasizing that the news of Moab's "spoiled" state must travel along its borders, a stark announcement of their irreversible ruin.