God will Punish the King of Assyria's Arrogance

"Therefore it shall come to pass, when the Lord has performed all His work on Mount Zion and on Jerusalem, that He will say, "I will punish the fruit of the arrogant heart of the king of Assyria, and the glory of his haughty looks." For he says: "By the strength of my hand I have done it, And by my wisdom, for I am prudent" Isaiah 10:12-13

COMMENTARY - ISAIAH 10:12-13
12. whole work--His entire plan is regard to the punishment of the Jews (Isa 10:5-7).
Zion--the royal residence, the court, princes and nobles; as distinguished from "Jerusalem," the people in general.
fruit--the result of, that is, the plants emanating from.
stout--Hebrew, "greatness of," that is, pride of.
glory--haughtiness.

13. I am prudent--He ascribes his success to his own prudence, not to God's providence.
removed the bounds--set aside old, and substituted new boundaries of kingdoms at will. A criminal act, as Jehovah Himself had appointed the boundaries of the nations (De 32:8).
treasures--"hoarded treasures".
put down . . . inhabitants like--rather, "as a valiant man, I have brought down (from their seats) those seated" (namely, "on thrones"; as in Ps 2:4; 29:10; 55:19). The Hebrew for "He that abideth," is He that sitteth on a throne); otherwise, "I have brought down (as captives into Assyria, which lay lower than Judea; therefore 'brought down,' compare Isa 36:1, 10), the inhabitants". JFB 

View Section - Isaiah 10:5-34