Justified Freely by His Grace
ROMANS 3:21–31For nearly three chapters Paul has been building a case for the prosecution. The pagan who suppresses the truth stands guilty (1:18–32); the moralist who judges him stands guilty (2:1–16); the Jew entrusted with the law and circumcision stands guilty (2:17–3:8). Then Paul calls the whole human race into the dock and pronounces the verdict from its own Scriptures: “None is righteous, no, not one” (3:10). The courtroom falls silent—“so that every mouth may be stopped, and the whole world may be held accountable to God” (3:19)—and the door of law-keeping is bolted shut: “by works of the law no human being will be justified in his sight” (3:20). At that moment, with every defense exhausted and every excuse silenced, Paul writes two words that change everything: But now.
Everything before verse 21 is a locked door; everything after it is an open one. Luther called this paragraph the very center of the whole Bible, and Calvin said there is no passage in all of Scripture that more clearly explains the righteousness of God in Christ. What follows is not a new option added to the old ones, and not a lowered standard that we might finally manage to reach. It is the announcement that God Himself has done, in His Son, what the law could never do in us—and that He has done it in such a way that His own justice is not merely preserved but publicly displayed. Justice satisfied and sinners saved, at the same moment, by the same act. That is the summit of Romans, and it is the ground under our feet every day we live.
The hinge of the letter (v. 21). “But now” is both logical and historical. Logically, it is the turn from verdict to remedy; historically, it marks the arrival of a new age. The verb “has been manifested” is in the perfect tense: something happened once, at the cross, and its effect stands permanently in force. Note what is not said. Paul does not say that God has lowered the requirement, offered a discount, or agreed to grade on a curve. He says a righteousness has been revealed—brought out into the open, made visible in history in the person and work of Jesus Christ. The righteousness that the law demanded but could not produce, God has provided.
“Apart from the law… although the Law and the Prophets bear witness” (v. 21). Paul holds two things together that we are always tempted to pull apart. This righteousness is apart from law-keeping as a method—no obedience of ours contributes anything to it. Yet it is not apart from the Scriptures as testimony: the whole Old Testament has been pointing here all along. The sacrificial system, the Day of Atonement, Abraham believing God and having it counted to him as righteousness (Gen. 15:6, which Paul will expound in chapter 4), David’s blessing on the man to whom the Lord will not count sin (Ps. 32:1–2), the Servant who bears the iniquity of many (Isa. 53)—all of it was witness testimony given in advance. Calvin makes much of this: the gospel is not a novelty that embarrasses the Old Testament but the fulfillment the Old Testament was always straining toward.
“For all who believe. For there is no distinction” (vv. 22–23). Faith is the empty hand that receives; it is not a work that earns. Paul is careful never to say we are justified on account of faith, as though faith were a small merit God agreed to accept in place of a large one. We are justified through faith—faith is the instrument, Christ is the ground. And then the leveling word: no distinction. There is no distinction in guilt, because “all have sinned and fall short of the glory of God,” and there is no distinction in the remedy, because the same righteousness comes to all who believe. The Greek behind “fall short” carries the sense of continually lacking; we are not merely people who broke a rule in the past but people who presently live short of the glory for which we were made. Read verse 23 alongside 1:21—humanity refused to glorify God, and now humanity lacks that glory. The disease and its symptom are the same thing.
Justified, freely, by grace, through redemption (v. 24). Four of the greatest words in Christian vocabulary are stacked in a single verse. Justified is courtroom language: God the Judge declares a person righteous in His sight. It does not mean God makes us good and then accepts us; it means God declares us righteous on the basis of Another’s obedience, and then—by the Spirit, in sanctification—begins to make us what He has declared us to be. This order is the whole Reformation in miniature, and getting it backwards is the fastest way to lose your assurance. By his grace locates the cause entirely in God’s disposition, not in ours. As a gift translates a word meaning “freely, without cause”—the same word Jesus uses in John 15:25, “They hated me without a cause.” They hated Him for no reason in Him; He justifies us for no reason in us. And redemption (apolytrōsis) means release secured by the payment of a ransom price. Notice the paradox that MacArthur loves to press: justification is free to us precisely because it was infinitely costly to God. Nothing in the universe is cheaper to receive or was more expensive to provide.
Imputation and the “alien” righteousness. Luther’s great discovery was that the “righteousness of God” in Romans is not only the attribute by which God judges us, but the gift by which He clothes us—a righteousness that comes from outside ourselves, which Luther called an alien righteousness because it is not native to us and never becomes our own achievement. Hence his famous formula: the believer is simul iustus et peccator, at the same time righteous and a sinner—righteous in Christ before the throne, still a sinner in himself and still fighting. This is why a Christian can be brutally honest about his sin without despairing, and why he can be perfectly secure without becoming smug. The great exchange of 2 Corinthians 5:21 stands behind it all: “For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.”
“God put forward” (v. 25). Before we say anything about the cross, notice who acts. The Father is the subject of every verb in this sentence. He put Christ forward publicly; He provided the sacrifice; He displayed His own righteousness. Any presentation of the atonement in which a reluctant Father is placated by a kind Son is a caricature, and it is not Paul. Atonement is not something the Son does to the Father; it is something the Triune God does for sinners at infinite cost to Himself. “God shows his love for us in that while we were still sinners, Christ died for us” (Rom. 5:8).
Propitiation, not merely expiation (v. 25). Modern translations sometimes soften this word to “a sacrifice of atonement” or “the means of forgiving sins,” and something vital is lost. Expiation means sin is covered or cancelled; it has sin as its object. Propitiation means wrath is satisfied and turned away; it has God’s holy anger as its object. Both are true, but only the second answers Romans 1:18. Paul opened this letter announcing that “the wrath of God is revealed from heaven”—and if that wrath is real, then any salvation that does not deal with it is no salvation. The good news is that the wrath of 1:18 fell, in full, on Christ, “by his blood.” That last phrase means violent, sacrificial death, not merely a life laid down in principle. Piper argues strenuously that removing wrath from the atonement empties the cross of its glory: it is precisely the reality of the wrath absorbed that measures the love displayed. Take away wrath and Calvary becomes a tragic gesture; keep it, and Calvary becomes the most stunning act of love in the universe.
“He had passed over former sins” (v. 25). Here Paul raises a problem most of us have never thought to ask. We ask how God can be merciful. Paul asks how God could be just. For millennia God had been forgiving sinners—Abraham the deceiver, David the adulterer and murderer, Manasseh the idolater—on the basis of animal sacrifices that, as Hebrews 10:4 says plainly, could never take away sins. In “divine forbearance” He passed over them. But how? A human judge who repeatedly released guilty defendants would be removed from the bench, and rightly so. Every pardon God granted before Calvary was, in a sense, a charge against His own righteousness—an outstanding debt on the books of divine justice. The cross settles that account. God was not being lax for all those centuries; He was being patient, holding the reckoning until His Son could bear it. Christ died not only for our sins but for theirs, which is why Hebrews 9:15 says His death redeems “the transgressions committed under the first covenant.” Abraham and David are saved by exactly what saves us—they simply looked forward to it while we look back.
“Just and the justifier” (v. 26). This is the peak. Every religion and every human instinct assumes a trade-off: God can be strict or He can be lenient, but He cannot be both. Lower the standard and mercy becomes possible but justice dies. Uphold the standard and justice survives but no one is saved. The cross refuses the trade. At Calvary God does not relax His justice by one degree in order to save; He satisfies it utterly—and saves. He is just, because sin was punished fully. He is the justifier, because the One punished was the substitute, and His righteousness is credited to all who believe. Piper has called this the greatest sentence in the letter, and has spent much of his life pressing the point that God’s deepest commitment at the cross is to the vindication of His own righteousness—which is precisely what makes our salvation unshakable. If God saved us at the expense of His justice, our salvation would rest on a divine compromise, and compromises can be revisited. Because He saved us in a way that displayed His justice, our salvation rests on the same foundation as His own character.
“To be received by faith” (v. 25). Twice in two verses Paul returns to faith, lest anyone imagine that a finished work automatically covers everyone regardless of response. The mercy seat has been put forward publicly—but it is received by trusting Christ, and by nothing else. Luther saw that faith is not a bare intellectual agreement; it is a personal casting of one’s whole weight upon Christ. The difference is the difference between believing a bridge will hold and stepping onto it.
Boasting shut out (v. 27). Paul does not say boasting is discouraged, or reduced, or reserved for special occasions. It is excluded—the word means shut out, barred at the door. And notice the argument: it is excluded not by an appeal to humility as a virtue, but by the very structure of how we are saved. If salvation were by works, boasting would be logically appropriate; a person who earned something has a right to mention it. Because salvation is a gift received by faith, boasting is not merely unbecoming, it is nonsensical—like a drowning man bragging about the strength of his grip on the rope. This is why Paul says elsewhere that God chose what is low and despised “so that no human being might boast in the presence of God” (1 Cor. 1:29). Calvin observed that the whole aim of Paul’s argument is to strip us of everything we might claim as our own, so that God alone is glorified. And here is the pastoral edge: religious boasting rarely announces itself. It hides in comparison, in quiet contempt for the sloppier Christian, in the private ledger where we tally our devotional consistency. Every one of those ledgers was burned at the cross.
“By faith apart from works of the law” (v. 28). This is the verse over which the Reformation was fought. “Works of the law” includes both the ceremonial boundary markers that separated Jew from Gentile and the moral obedience the law commands—Paul has already excluded the second explicitly in verse 20. Nothing we do enters the ground of our acceptance. But hear the crucial distinction, or you will mishear the whole doctrine: we are justified by faith alone, yet the faith that justifies is never alone. It always brings forth love, obedience, and good works—not as its root but as its fruit. Luther, who defended “alone” more fiercely than anyone, also insisted that living faith is a busy, active, restless thing that cannot help but do good works. Works are not the cause of justification; they are its evidence, and James 2 is arguing against a dead orthodoxy that claims a faith it does not have.
One God, therefore one way of salvation (vv. 29–30). Paul’s next argument is one we would never have thought to make, and it is devastating. If justification came through the law, then God would be the God of the law-possessing people only—a tribal deity with a regional franchise. But Israel’s most fundamental confession is the Shema: “Hear, O Israel: The LORD our God, the LORD is one” (Deut. 6:4). If there is only one God, He must be the God of all peoples; and if He is the God of all peoples, He must save them all the same way. Monotheism itself demands justification by faith. Notice the slight variation in verse 30—the circumcised “by faith,” the uncircumcised “through faith.” Most commentators take this as stylistic rather than substantive; the point is emphatically that there are not two doors, one grand and one side entrance. There is one door, and everyone stoops to enter it.
“We uphold the law” (v. 31). Paul anticipates the obvious objection: if righteousness is apart from law, have you not just demolished the law? His answer is the strongest negative in Greek—the ESV’s “By no means!” renders a phrase closer to “may it never be!” The gospel establishes the law in at least three ways, and it is worth walking the group through each. First, the cross upholds the law’s penalty: far from waiving the sentence, God executed it on His Son, which is a higher view of the law than any legalist ever held. Second, the gospel upholds the law’s purpose—the law was never given as a ladder to climb but as a mirror to reveal sin and drive us to Christ (Gal. 3:24); a person who uses the law that way is using it exactly as intended. Third, justification produces what the law demanded: the believer, freed from condemnation and indwelt by the Spirit, actually begins to love God and neighbor, so that “the righteous requirement of the law” is fulfilled in us who walk by the Spirit (Rom. 8:4). Grace is not the enemy of obedience; it is the only soil in which real obedience has ever grown. And this verse is Paul’s bridge to chapter 4, where he will prove from the Law itself—from Abraham and David—that this has always been God’s way.
Big idea: After proving that no one can be justified by law-keeping, Paul announces that God has revealed a righteousness of His own—apart from the law, promised throughout the Law and the Prophets, given freely as a gift, received by faith alone, and grounded entirely in Christ, whom God put forward as the mercy seat where His wrath was satisfied by blood. Because Christ bore the penalty, God can pardon guilty sinners without ceasing for one instant to be just; He is at the same moment “just and the justifier of the one who has faith in Jesus.” Therefore boasting is shut out, Jew and Gentile stand on identical ground, and the law is not demolished but honored—its penalty paid, its purpose fulfilled, its righteousness at last produced in those the Spirit indwells. Your standing before God does not fluctuate with your performance; it rests on a verdict already announced over a work already finished.
Prayer focus: Begin by simply thanking God for the words “but now.” Confess the specific places where you have been quietly building a case for yourself—the private ledger, the comparison, the boast that hides behind humility—and lay it down. Thank the Father that He did not merely overlook your sin but dealt with it, and thank the Son for absorbing the wrath of Romans 1:18 in your place. Ask for the assurance that comes from resting on Christ’s record rather than your own, especially for anyone in the group presently struggling to believe they are truly forgiven. Pray for one friend by name who is still trying to earn what can only be received, and ask God for the words to tell them plainly what He has done.