ישעיהו, פרק ל״ז, פסוק ל״ד

God's promise firmly seals the fate of the Assyrian king, guaranteeing the absolute safety of Jerusalem. This protection is not limited to the immediate threat but extends well into the future.

A decisive message is delivered through a deliberate repetition. The decree first establishes that the invading king will be forced to retreat along the exact same path he used to arrive. It then adds a second, emphatic guarantee that he will never step foot inside the city. This extra layer of assurance teaches that the king's failure is permanent. Even if he were to decide later to launch a second campaign against Jerusalem, his fate is already sealed; he will never succeed in breaching its gates [מלבי״ם].