With the shift to a new section, Isaiah returns to the idea of Jehovah as the punishing and angry God. The last chapter ended with Jehovah’s eventual triumph, and this chapter precedes that triumphant time. Similar to the previous prophesied destruction, Jehovah does declare that his “anger is not upon them that rejoice in my highness.” Jehovah is angered with those who have strayed, not with the righteous.
Similar to the previous prophecy of destruction, this will come “from a far country,” and will be the Lord’s “weapons of his indignation, to destroy the land.” These are themes from the chapters discussing the Assyrian invasion, and certainly apply to that time period. They also apply to the invasion from Babylon, and that is the reason that the later editor added in the idea that this is a prophecy of a second invasion. Since there are two prophecies of invasions, and the later editor knew that there had been two, the Assyrian and the Babylonian, we have this prophecy specifically applied to the Babylonian invasion.