20 Our involvement with God's revelation doesn't put us right with God. What it does is force us to face our complicity in everyone else's sin.
21 But in our time something new has been added. What Moses and the prophets witnessed to all those years has happened. 22 The God-setting-things-right that we read about has become Jesus-setting-things-right for us. And not only for us, but for everyone who believes in him. For there is no difference between us and them in this. 23 Since we've compiled this long and sorry record as sinners (both us and them) and proved that we are utterly incapable of living the glorious lives God wills for us, 24 God did it for us. Out of sheer generosity he put us in right standing with himself. A pure gift. He got us out of the mess we're in and restored us to where he always wanted us to be. And he did it by means of Jesus Christ.
Matthew Henry's Commentary on Romans 3:20-24
Commentary on Romans 3:19-20
(Read Romans 3:19-20)
It is in vain to seek for justification by the works of the law. All must plead guilty. Guilty before God, is a dreadful word; but no man can be justified by a law which condemns him for breaking it. The corruption in our nature, will for ever stop any justification by our own works.
Commentary on Romans 3:21-26
(Read Romans 3:21-26)
Must guilty man remain under wrath? Is the wound for ever incurable? No; blessed be God, there is another way laid open for us. This is the righteousness of God; righteousness of his ordaining, and providing, and accepting. It is by that faith which has Jesus Christ for its object; an anointed Saviour, so Jesus Christ signifies. Justifying faith respects Christ as a Saviour, in all his three anointed offices, as Prophet, Priest, and King; trusting in him, accepting him, and cleaving to him: in all these, Jews and Gentiles are alike welcome to God through Christ. There is no difference, his righteousness is upon all that believe; not only offered to them, but put upon them as a crown, as a robe. It is free grace, mere mercy; there is nothing in us to deserve such favours. It comes freely unto us, but Christ bought it, and paid the price. And faith has special regard to the blood of Christ, as that which made the atonement. God, in all this, declares his righteousness. It is plain that he hates sin, when nothing less than the blood of Christ would satisfy for it. And it would not agree with his justice to demand the debt, when the Surety has paid it, and he has accepted that payment in full satisfaction.