ישעיהו, פרק ל״ח, פסוק ו׳

A profound moment of crisis for King Hezekiah yields a double divine promise, linking his personal survival with the national destiny of Jerusalem. The good news of his physical recovery is paired with the assurance of political salvation from the looming Assyrian threat. This guarantee of protection from the Assyrian king reveals an important detail about the timeline of events, showing that Hezekiah's severe illness actually occurred before the collapse of Sennacherib's army [רש״י].

This assurance of safety serves to calm the king, making it clear that the gift of an extended life does not cancel out the previous promise to save the city. Even if the Assyrian forces had already been struck down and Sennacherib had retreated to his own land, a lingering fear remained that he might return to attack Jerusalem with fresh troops. Therefore, a renewed guarantee of protection was necessary [שד״ל]. Ultimately, this is a far-reaching promise, ensuring that the king and the city will not only be spared in the present, but that the Assyrian threat will never rise against them again in the future [ביאור שטיינזלץ].

The nature of this promised defense is one of active shielding and guarding [ביאור שטיינזלץ]. It indicates that the city's survival will not rely on natural means or military strength, but on open miracles and direct divine providence. While a standard, natural victory would have satisfied the people of that generation, God chose to deliver them through extraordinary means. This public miracle serves a dual purpose: to sanctify His name throughout the world, and to elevate the honor and standing of the royal House of David [מלבי״ם].