These chapters continue the theme of judgment and salvation in light of Egypt and Assyria. It starts with a warning:
Woe to those who go down to Egypt for help,
who rely on horses,
who trust in the multitude of their chariots
and in the great strength of their horsemen,
but do not look to the Holy One of Israel,
or seek help from the Lord.
But, four verses later he declares that he will shield, deliver, and rescue Jerusalem. Either the Lord is going to ignore those who rely on Egypt, or judge them and save them anyway. If we look at it in redemptive-historical terms, it must be the latter. God will eventually turn the hearts of his people back to him. Left to their own devices, as we would be to ours, there is no hope. We will always turn to Egypt. In the final verses the Lord declares he will provide victory over the Assyrians.
Chapter 32 again intersperses salvation with judgment with salvation, and this time it all appears ultimately eschatological, but also pointing to the Church age. It starts with this:
See, a king will reign in righteousness
and rulers will rule with justice.
And goes directly to transformed people of God who will no longer be blind or deaf, and a place where wisdom will reign. The commentaries say this prophecy relates directly to Hezekiah, who came after the evil king Ahaz, but it certainly also refers typologically to Christ, especially with the reference to the blind and deaf. There is no doubt that later in the chapter these verses definitely point forward to not only Christ, but Pentecost, and eternity. The city will be laid waste:
15 till the Spirit is poured on us from on high,
and the desert becomes a fertile field,
and the fertile field seems like a forest.
16 The Lord’s justice will dwell in the desert,
his righteousness live in the fertile field.
17 The fruit of that righteousness will be peace;
its effect will be quietness and confidence forever.
In one sense, doing right, or righteousness, does bring peace. Conflict or tension, or other negative emotions and situations are avoided by doing, saying, or thinking the right things, and that’s all good and well. But this righteousness that Isaiah speaks of is a result of the Spirit being poured out on God’s people, which happened at Pentecost. And I believe the only righteousness that matters for us matters eternally, and is as Paul says in Romans 3, “This righteousness from God comes through faith in Jesus Christ to all who believe.” It is only out of this righteousness, one we cannot earn in obedience to the law, that true righteousness, i.e. works pleasing to God, flows. And it is only in that righteousness, given to us by faith, do we experience “quietness and confidence” both now and forever.