The YouTube overview of Isaiah describes this bit, it’s where the perspective changes from the fear before being attacked by Babylon etc to the joy of returning from exile and reclaiming Jerusalem.
Some argue it was by a later hand, Isaiah the sequel. I am not a biblical scholar and I don’t care deeply about it, but I don’t see any problem with the idea of Isaiah writing it. He predicted the near future, the attacks, he predicted the distant future, the Messiah, why not the middle future?
It’s an affirmation of how richly he will bless Israel, how there is no other God like him and and condemnation of idols.
The idols section is wonderfully vivid, painting a picture of one piece of wood being used half to burn in a fire a cook dinner, and half to view down to and worship. Having begged the question of its nurture and growth in the forest…
The ideas are bought together in a final burst of delight at how God forgives, nurtures, protects and supports Jerusalem. Which, if Isaiah did write it must have sounded very odd to the people living in mural fear of having their society and City destroyed.
They had David’s Psalms however, and I recall being struck by his response to crisis: go into God’s house and wait on him. Stay calm God is in control.
Trump, North Korea, the decline of Christian dominance, Isis… Stay calm, he is the lord “who frustrates the signs of liars and makes fools of diviners, who turns wise men back and makes their knowledge foolish”
No one else like him!