וְהָיָ֤ה אֽוֹר־יִשְׂרָאֵל֙ לְאֵ֔שׁ וּקְדוֹשׁ֖וֹ לְלֶהָבָ֑ה וּבָעֲרָ֗ה וְאָֽכְלָ֛ה שִׁית֥וֹ וּשְׁמִיר֖וֹ בְּי֥וֹם אֶחָֽד׃
און דאָס ליכט פֿון ישׂראל װעט זײַן אַ פֿײַער, און זײַן הײליקער אַ פֿלאַם, און זי װעט ברענען און פֿאַרצערן זײַנע דערנעראון זײַן װילדגעװעקס אין אײן טאָג.
Rashi
the light of Israel The Torah in which Hezekiah engages shall become fire for Sennacherib.
Ibn Ezra
The light of Israel. God. Shall be a fire. This refers to the angel that destroyed the Assyrian camp.
Rashi
and his holy one The Holy One, blessed be He. Alternatively, “And his holy one,” refers to the righteous of the generation.
Rashi
his thorns and his worms [They symbolize] his nobles and his heroes.