ישעיהו, פרק ט״ו, פסוק ז׳

A profound crisis strikes Moab, threatening to wipe out the vast wealth, property, and labor the nation accumulated over many years. The primary approach among commentators is that this impending loss centers on Moab's great material abundance and hidden treasures. Some commentators specify the exact nature of these assets. [שד״ל] suggests their primary wealth consisted of massive herds of sheep and cattle, which required constant supervision and counting. Taking an economic view, [מלבי״ם] explains that this wealth represents the nation's export surplus and the imported goods they accumulated.

In contrast to the focus on material wealth, [רש״י] offers a moral and historical perspective. He explains that the accumulated abundance actually refers to an excess of evil deeds committed by the Moabites. This includes their deep ingratitude toward the descendants of Abraham—who had historically helped their ancestor Lot—as well as their mockery of the exiled tribes of Reuben and Gad, and their active support of Sennacherib's siege of Samaria. As a result, the focus shifts to the severe punishment decreed upon them, which includes the stripping away of their national borders. Echoing the sheer intensity of this downfall, [ביאור שטיינזלץ] notes that the invading enemy unleashed an excessive level of destruction, far beyond anything previously anticipated.

In the wake of this disaster, a desperate movement unfolds around a mysterious river lined with willow trees. Commentators differ on who is transporting the remaining assets and for what purpose. One perspective suggests the Moabites themselves are frantically trying to salvage their wealth. Overwhelmed by heavy warfare, they carry their hidden treasures to the riverbank, hoping to conceal their valuables from plunderers among the thick willow branches [מצודת דוד] or to relocate them to a safer haven [אבן עזרא]. Offering an agricultural variation, [שד״ל] proposes that a severe drought forced the Moabites to herd their precious livestock to a water-rich river in a desperate search for surviving pasture.

Conversely, other commentators argue that the invading enemies are the ones carrying away the wealth. The conquerors haul the plundered spoils to a nearby riverbank to gather and divide the loot while completely destroying Moab [רד״ק, ביאור שטיינזלץ]. Taking this a step further, the journey to the river represents a literal exile. The enemies do not merely pillage the property; they deport the Moabite people themselves to Babylon, a land famous for its river willows [רש״י]. [מלבי״ם] adds that this serves as a poetic depiction of Moab's entire economy and commerce being taken captive and transported into enemy territory. Ultimately, the exact identity of the river remains varied; it may refer to a stream in the desert valley, the waterways of Egypt or Babylon, or simply a local Moabite river known for the willow trees growing along its banks [ביאור שטיינזלץ, מלבי״ם, רד״ק].