4 Give attention to me, O my people; and give ear to me, O my nation; for teaching will go out from me, and the knowledge of the true God will be a light to the peoples. 5 Suddenly will my righteousness come near, and my salvation will be shining out like the light; the sea-lands will be waiting for me, and they will put their hope in my strong arm. 6 Let your eyes be lifted up to the heavens, and turned to the earth which is under them: for the heavens will go in flight like smoke, and the earth will become old like a coat, and its people will come to destruction like insects: but my salvation will be for ever, and my righteousness will not come to an end. 7 Give ear to me, you who have knowledge of righteousness, in whose heart is my law; have no fear of the evil words of men, and give no thought to their curses. 8 For like a coat they will be food for the insect, the worm will make a meal of them like wool: but my righteousness will be for ever, and my salvation to all generations.
9 Awake! awake! put on strength, O arm of the Lord, awake! as in the old days, in the generations long past. Was it not by you that Rahab was cut in two, and the dragon Wounded? 10 Did you not make the sea dry, the waters of the great deep? did you not make the deep waters of the sea a way for the Lord's people to go through? 11 Those whom the Lord has made free will come back with songs to Zion; and on their heads will be eternal joy: delight and joy will be theirs, and sorrow and sounds of grief will be gone for ever. 12 I, even I, am your comforter: are you so poor in heart as to be in fear of man who will come to an end, and of the son of man who will be like grass? 13 And you have given no thought to the Lord your Maker, by whom the heavens were stretched out, and the earth placed on its base; and you went all day in fear of the wrath of the cruel one, when he was making ready for your destruction. And where is the wrath of the cruel one? 14 The prisoner, bent under his chain, will quickly be made free, and will not go down into the underworld, and his bread will not come to an end.
Matthew Henry's Commentary on Isaiah 51:4-14
Commentary on Isaiah 51:4-8
(Read Isaiah 51:4-8)
The gospel of Christ shall be preached and published. How shall we escape if we neglect it? There is no salvation without righteousness. The soul shall, as to this world, vanish like smoke, and the body be thrown by like a worn-out garment. But those whose happiness is in Christ's righteousness and salvation, will have the comfort of it when time and days shall be no more. Clouds darken the sun, but do not stop its course. The believer will enjoy his portion, while revilers of Christ are in darkness
Commentary on Isaiah 51:9-16
(Read Isaiah 51:9-16)
The people whom Christ has redeemed with his blood, as well as by his power, will obtain joyful deliverance from every enemy. He that designs such joy for us at last, will he not work such deliverance in the mean time, as our cases require? In this world of changes, it is a short step from joy to sorrow, but in that world, sorrow shall never come in view. They prayed for the display of God's power; he answers them with consolations of his grace. Did we dread to sin against God, we should not fear the frowns of men. Happy is the man that fears God always. And Christ's church shall enjoy security by the power and providence of the Almighty.