# When the Lord has finished his work on Mount Zion and on Jerusalem, I will punish

Yahweh speaks of himself as if he were someone else. "When I, the Lord, have finished my work on Mount Zion and on Jerusalem, I will 

# I will punish the fruit of the arrogant heart of the king of Assyria and his prideful looks

"I will punish the king of Assyria for the arrogant things he has said and the look of pride on his face"