Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Isa 59:1-8) Reproofs of sin and wickedness.
(Isa 59:9-15) Confession of sin, and lamentation for the consequences.
(Isa 59:16-21) Promises of deliverance.
If our prayers are not answered, and the salvation we wait for is not wrought for us, it is not because God is weary of hearing prayer, but because we are weary of praying. See here sin in true colours, exceedingly sinful; and see sin in its consequences, exceedingly hurtful, separating from God, and so separating us, not only from all good, but to all evil. Yet numbers feed, to their own destruction, on infidel and wicked systems. Nor can their skill or craft, in devising schemes, as the spider weaves its web, deliver or save them. No schemes of self-wrought salvation shall avail those who despise the Redeemer's robe of righteousness. Every man who is destitute of the Spirit of Christ, runs swiftly to evil of some sort; but those regardless of Divine truth and justice, are strangers to peace.
If we shut our eyes against the light of Divine truth, it is just with God to hide from our eyes the things that belong to our peace. The sins of those who profess themselves God's people, are worse than the sins of others. And the sins of a nation bring public judgments, when not restrained by public justice. Men may murmur under calamities, but nothing will truly profit while they reject Christ and his gospel.
This passage is connected with the following chapters. It is generally thought to describe the coming of the Messiah, as the Avenger and Deliverer of his church. There was none to intercede with God to turn away his wrath; none to interpose for the support of justice and truth. Yet He engaged his own strength and righteousness for his people. God will make his justice upon the enemies of his church and people plainly appear. When the enemy threatens to bear down all without control, then the Spirit of the Lord shall stop him, put him to flight. He that has delivered, will still deliver. A far more glorious salvation is promised to be wrought out by the Messiah in the fulness of time, which all the prophets had in view. The Son of God shall come to us to be our Redeemer; the Spirit of God shall come to be our Sanctifier: thus the Comforter shall abide with the church for ever, Joh 14:16. The word of Christ will always continue in the mouths of the faithful; and whatever is pretended to be the mind of the Spirit, must be tried by the Scriptures. We must lament the progress of infidelity and impiety. But the cause of the Redeemer shall gain a complete victory even on earth, and the believer will be more than conqueror when the Lord receives him to his glory in heaven.