וְהָיָ֤ה אֽוֹר־יִשְׂרָאֵל֙ לְאֵ֔שׁ וּקְדוֹשׁ֖וֹ לְלֶהָבָ֑ה וּבָעֲרָ֗ה וְאָֽכְלָ֛ה שִׁית֥וֹ וּשְׁמִיר֖וֹ בְּי֥וֹם אֶחָֽד׃
And the light of Israel shall be for a fire, And his Holy One for a flame; And it shall burn and devour his thorns And his briers in one day.
Rashi on Isaiah
the light of Israel The Torah in which Hezekiah engages shall become fire for Sennacherib.
Ibn Ezra on Isaiah
The light of Israel. God. Shall be a fire. This refers to the angel that destroyed the Assyrian camp.
Rashi on Isaiah
and his holy one The Holy One, blessed be He. Alternatively, “And his holy one,” refers to the righteous of the generation.