יחזקאל, פרק כ״ה, פסוק י׳

The prophecy outlines the complete destruction and historical erasure of an entire nation through a devastating foreign conquest. The fate of Ammon is closely tied to its neighbor, Moab, creating a chain reaction where the breach of one nation's borders directly brings about the annihilation of the other.

God calls upon the people of the East, identified as the Persians and Medes [מצודת דוד], to wage war against Ammon [רש״י, רד״ק]. The invading army's path will cut directly through Moab, breaking open its borders and cities to allow the conquerors to enter and settle in Ammon [רש״י, מלבי״ם, ביאור שטיינזלץ]. Ammon's punishment is linked to Moab due to their shared geography and status as sister nations. However, Ammon suffers a much heavier blow because they actively harmed the Israelites, cruelly mocking them and rejoicing in their suffering during their exile [רד״ק].

Ultimately, the land of Ammon is given to the people of the East as a permanent possession. This operates on a strict principle of measure for measure. God originally granted this land to the descendants of Lot as a permanent inheritance. Yet, because Ammon coveted and seized the inheritance of the Israelites, their own land is stripped away and handed to foreigners [מלבי״ם]. The final goal of this invasion is total erasure. Because God determines the borders of every nation, permanently transferring Ammon's territory to another people effectively ends its existence. Ammon will be utterly destroyed, and its name will be completely wiped from the memory of the world [מלבי״ם, מצודת דוד].