Isaiah 10:17

17 The light of Israel
In this context the “Light of Israel” is a divine title (note the parallel title “his holy one”). The title points to God’s royal splendor, which overshadows and, when transformed into fire, destroys the “majestic glory” of the king of Assyria (v. 16b).
will become a fire,
their Holy One
See the note on the phrase “the Holy One of Israel” in 1:4.
will become a flame;
it will burn and consume the Assyrian king’s
Heb “his.” In vv. 17–19 the Assyrian king and his empire is compared to a great forest and orchard that are destroyed by fire (symbolic of the Lord).
briers
and his thorns in one day.
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