In kings I remember the king making fun of the prophets as always being negative.
Here starts a correction of Isaiah not being negative, or at least, negative about Israel’s enemies rather than Israel for once.
He talks of a coming reckoning for Babylon, Assyria and Phillistia here.
Spends most time on Babylon. He talks in detail about this who will be relieved when their arrogance and wealth is broken. They think they are ascending to become Gods, but Sheol will welcome them. Lots of contrast.
These passages are probably a great encouragement to oppressed people, and are a little bit encouraging to me as even I feel a little bit oppressed by life.
Interestingly there was not a lot of talk about God, but the predicted downfall of these empires with time is taken to be justice.