Does Romans 3 Prove Mary Was Not Sinless?
Ask almost any Protestant to name the single verse that supposedly demolishes the Catholic teaching on Mary, and you will hear the same words: “all have sinned, and do need the glory of God” (Romans 3:23, Douay-Rheims Bible [DRB], 1899/1971). The logic seems airtight. Scripture says all have sinned. Mary is part of all. Therefore Mary sinned, and the doctrine of the Immaculate Conception collapses. It is a tidy syllogism, and it has convinced a great many sincere Christians that Rome has quietly contradicted the Bible.
But a good argument has to do more than sound tidy. It has to actually address the question it claims to answer. And when we slow down and read Romans 3 the way Paul wrote it — in context, against its Old Testament background, and alongside the rest of the New Testament — the proof-text turns out to prove something quite different from what the objection needs. Let us walk through it carefully, using the Douay-Rheims Bible, the historic English translation of the Catholic Church.
What Does Romans 3:23 Actually Say?
The verse reads, in full, “for all have sinned, and do need the glory of God” (Rom 3:23, DRB, 1899/1971). Notice first that it is only half of a sentence. The very next words are “being justified freely, by his grace, through the redemption, that is in Christ Jesus” (Rom 3:24, DRB, 1899/1971). Paul is not pausing to conduct a moral census of the human race. He is building an argument, and Romans 3:23 is a hinge in that argument, not a stand-alone doctrinal decree.
What is the argument? From Romans 1 onward, Paul has been methodically demonstrating that Gentiles and Jews alike stand under the power of sin, so that no one can claim to be justified before God on the basis of ethnic pedigree or the works of the Law. He states his thesis plainly in Romans 3:9: “What then? Do we excel them? No, not so. For we have charged both Jews, and Greeks, that they are all under sin” (Rom 3:9, DRB, 1899/1971). The whole point is that there is no distinction — no advantaged class — when it comes to the need for the gospel. Romans 3:23 is Paul’s summary of that case, and the phrase immediately preceding it, “for there is no distinction” (Rom 3:22, DRB, 1899/1971), tells us exactly what kind of “all” he has in mind: not a headcount of every individual who ever lived, but the abolition of any boundary between Jew and Gentile in their shared need for redemption.
Mainstream scholarship across the confessional spectrum reads it this way. The Protestant commentator Douglas J. Moo notes that the “all” who are justified in this passage indicates a lack of particularity rather than a claim of strict universality, tying the phrase back to the “no distinction” of the preceding verse (Moo, 1996, p. 227). Whatever one ultimately concludes about Mary, the verse is doing corporate, not individually exhaustive, work.
Does “All” Always Mean Every Single Person Without Exception?
Here is where the objection quietly overreaches. It assumes that the word “all” must always carry a strict, exceptionless, distributive force — every single individual, no exclusions permitted. But that is simply not how Scripture uses the word, nor how ordinary human language uses it.
The Bible is full of “alls” that plainly admit exceptions. Mark tells us that “all the country of Judea, and all they of Jerusalem” went out to John the Baptist and were baptized by him (Mark 1:5, DRB, 1899/1971), yet Luke tells us that “the Pharisees and the lawyers despised the counsel of God against themselves, being not baptized by him” (Luke 7:30, DRB, 1899/1971). Both statements are true; the first is not a literal claim that every last resident of Jerusalem waded into the Jordan. When the Pharisees complain that “the whole world is gone after him” (John 12:19, DRB, 1899/1971), they obviously do not mean every human on the planet. This is the ordinary Semitic use of hyperbole and collective language, and it is pervasive in Scripture (Lyons, 2007).
Even within Romans itself, Paul uses “all” non-literally. He tells the Roman Christians they are “filled with all knowledge” (Rom 15:14, DRB, 1899/1971), which no one takes to mean omniscience. So the mere presence of the word “all” cannot settle the question. As Catholic Answers puts it in its response titled “‘All Have Sinned’ and the Immaculate Conception,” once we recognize that Paul is speaking collectively — of all sorts of people, Jew and Gentile alike — the sweeping language allows for exceptions by its very structure (Catholic Answers, 2004).
Did Scripture Already Grant an Exception?
This is the decisive move, and it is one the objection cannot survive. If “all have sinned, and do need the glory of God” is to be read as an absolute, exceptionless, metaphysical claim about every human being who has ever existed, then it proves far too much — because Scripture itself names exceptions.
Consider Jesus Christ. He is fully and truly human, a man in every sense. Yet the Letter to the Hebrews declares that we have a high priest “that cannot be touched with the feeling of our infirmities: but one that hath been tempted in all things, like as we are, without sin” (Heb 4:15, DRB, 1899/1971). Scripture explicitly exempts a human being from the universality of sin. Now, the point here is not to equate Mary with Christ — Christ is a divine Person and the sinless Redeemer, while Mary is a creature who was redeemed. The point is strictly logical: the moment you concede that Hebrews 4:15 carves out an exception to “all have sinned,” you have conceded that Romans 3:23 was never meant as an absolute, exceptionless statement in the first place. And once the “all” admits one exception, it can no longer be used to rule out another exception by itself. The proof-text has lost its probative force.
Scripture goes further. It repeatedly describes particular human beings as “just” and “blameless.” Noe (Noah) “was a just and perfect man in his generations, he walked with God” (Gen 6:9, DRB, 1899/1971). Zachary and Elizabeth “were both just before God, walking in all the commandments and justifications of the Lord without blame” (Luke 1:6, DRB, 1899/1971). Job was described by God himself as “a simple and upright man, and fearing God, and avoiding evil” (Job 1:8, DRB, 1899/1971). Catholic theology does not claim these figures were sinless in the way Mary was — they, too, needed grace, and Scripture speaks of their righteousness in a relative and covenantal sense. But their existence proves the essential point: the biblical writers were perfectly comfortable describing real individuals as “just” and “blameless” without imagining any contradiction with the language of universal sinfulness. The two registers coexist because “all have sinned” was never functioning as a rigid, no-exceptions census.
What Was Paul Really Drawing On?
It helps to see where Paul got his language. Romans 3:10–18 is not original composition but a mosaic — a catena, or chain — of Old Testament quotations. “There is not any man just. There is none that understandeth, there is none that seeketh after God. All have turned out of the way; they are become unprofitable together: there is none that doth good, there is not so much as one” (Rom 3:10–12, DRB, 1899/1971) is lifted almost verbatim from Psalm 13 (14 in most Protestant numbering), with strands from Ecclesiastes 7:20, Psalm 5:11, Psalm 139:4, Psalm 9:28, Isaiah 59:7–8, and Psalm 35:2 woven in.
This matters enormously, because in their original setting those very Psalms do not deny the existence of righteous people — they presuppose it. Psalm 13 sets those who “eat up my people as they eat bread” over against “the generation of the just,” of whom the Psalmist says “the Lord is his hope” (Ps 13:4–6, DRB, 1899/1971). The Psalmist who cries that “there is none that doth good, no not one” is himself numbered among “the just” he mentions a few lines later. In other words, the very texts Paul quotes to establish universal sinfulness are texts that, in context, distinguish the wicked from the just. Paul is deploying the rhetoric of the Psalms — sweeping, prophetic, indicting language — to make a theological point about the human condition as a whole and the equal standing of Jew and Gentile before God. He is not issuing an actuarial statement that forecloses every possible exception. As the New Perspective scholar James D. G. Dunn observes of this section, all of the Psalm citations presuppose an antithesis between the righteous, faithful member of the covenant and the unrighteous (Dunn, 1988, pp. 165–169). Reading Romans 3:23 as an exceptionless proposition actually misreads the Scriptures Paul is citing.
What Did the Council of Trent Say?
Now we come to a point that surprises many Protestants — and, frankly, many Catholics. The Catholic Church has directly addressed the relationship between the universality of sin and Mary’s unique holiness, and it did so in the same sixteenth-century council that Protestants usually associate with the Church’s response to the Reformation: the Council of Trent.
In its Sixth Session (1547), the Decree on Justification, Trent laid down a series of canons. Canon 23 reads: “If any one saith, that a man once justified can sin no more, nor lose grace, and that therefore he that falls and sins was never truly justified; or, on the contrary, that he is able, during his whole life, to avoid all sins, even those that are venial, except by a special privilege of God, as the Church holds in regard of the Blessed Virgin; let him be anathema” (Council of Trent, 1978, Session VI, Canon 23; originally promulgated 1547).
Read that carefully. Trent’s general teaching is precisely that no ordinary justified person can, in fact, avoid all sin throughout life by their own power — a strongly Augustinian, even “Protestant-sounding,” acknowledgment of human frailty. But the canon builds in one stated exception: the case of the Blessed Virgin, whom God preserved by “a special privilege.” Notice what this means for our argument. The Church is not naively pretending that human beings are generally sinless. She affirms the near-universal reality of sin and the singular, grace-given exception of Mary in the very same sentence. This is not a doctrine invented to dodge Romans 3:23; it is a carefully bounded claim that a unique divine privilege — not any natural human capacity — accounts for Mary’s sinlessness.
Trent had already, in its Fifth Session (1546), declared that in its decree on original sin it was “not its intention to include in this decree, where original sin is treated of, the blessed and immaculate Virgin Mary, the Mother of God” (Council of Trent, 1978, Session V; originally promulgated 1546). The exception was deliberate and explicit.
Was Mary Exempt From Needing a Savior?
The sharpest form of the objection is not really about Romans 3:23 at all. It is Mary’s own words: “My soul doth magnify the Lord. And my spirit hath rejoiced in God my Saviour” (Luke 1:46–47, DRB, 1899/1971). If Mary calls God her Saviour, doesn’t that prove she needed saving — and therefore that she was a sinner?
The Catholic answer is emphatic: yes, Mary needed a Savior, and yes, Jesus Christ is her Savior. The Church has never taught otherwise. What the Church teaches is how she was saved. And here the crucial insight comes from the medieval Franciscan theologian Bl. John Duns Scotus, who resolved a problem that had stumped even St. Thomas Aquinas and St. Bernard of Clairvaux.
Scotus distinguished two ways a person can be “saved.” Ordinarily, we are saved the way a man is rescued after he has already fallen into a pit — pulled out after the fact. But there is a more perfect form of salvation: to be warned before the pit and prevented from falling in at all. The person kept from falling is even more indebted to their rescuer than the one hauled out afterward. This is preservative redemption. Mary, Scotus argued, was redeemed by Christ in this more excellent way — not cleansed of a sin already contracted, but preserved from ever contracting it, in anticipation of Christ’s merits (Catholic Answers, 2025). Far from exempting Mary from redemption, this makes her the most perfectly redeemed of all creatures. As the Catechism puts it, Mary was “redeemed, in a more exalted fashion, by reason of the merits of her Son” (Catechism of the Catholic Church, 1997, no. 492).
What Did Pope Pius IX Actually Define?
This is exactly what the Church solemnly defined in 1854. In the apostolic constitution Ineffabilis Deus, Pope Pius IX declared “that the doctrine which holds that the most Blessed Virgin Mary, in the first instance of her conception, by a singular grace and privilege granted by Almighty God, in view of the merits of Jesus Christ, the Savior of the human race, was preserved free from all stain of original sin, is a doctrine revealed by God and therefore to be believed firmly and constantly by all the faithful” (Pius IX, 1854).
Every clause is doing work. Mary’s preservation is “a singular grace and privilege” — not a natural entitlement, not something she achieved. It is “granted by Almighty God.” And it is “in view of the merits of Jesus Christ, the Savior of the human race.” The Latin phrase is intuitu meritorum Christi Iesu — in view of, or in consideration of, the merits of Christ Jesus. Mary’s sinlessness is entirely dependent on, and derived from, the saving work of her Son. She is not an exception to the need for Christ’s redemption; she is its supreme beneficiary. Pius IX himself said the Fathers professed that Mary, by virtue of the foreseen merits of Christ, was never subject to original sin, but was completely preserved from the original taint, and hence was redeemed in a manner more sublime (Pius IX, 1854).
So the Immaculate Conception, rightly understood, is a doctrine about Christ’s redemptive power, not a denial of it. It says that the grace of Calvary was so potent that God could apply it to one creature preemptively, from the first instant of her existence, precisely because she was to become the Mother of God.
So Does Romans 3 Disprove Mary’s Sinlessness?
No — and now we can see why with precision. The objection fails on several independent grounds, any one of which is sufficient.
Read in context, Romans 3:23 is Paul’s summary of a corporate argument about the equal standing of Jew and Gentile under sin and their equal need for justification by faith; it is not a metaphysical roll-call of every individual. The word “all” throughout Scripture — and within Romans itself — regularly admits exceptions, so it cannot by itself exclude one. Scripture openly names an exception to universal sinfulness in the sinless Christ (Heb 4:15) and freely calls individuals like Noe, Job, Zachary, and Elizabeth “just” and “blameless,” proving the language was never exceptionless. The Psalms Paul quotes themselves distinguish the just from the wicked. And when the Church defined Mary’s sinlessness, she did so precisely as a singular privilege grounded in Christ’s merits — a point the Council of Trent made in the very same canon where it affirmed that ordinary Christians cannot avoid all sin without such a privilege.
In the end, Romans 3:23 and the Immaculate Conception are answers to two different questions. Paul is answering, “On what basis is anyone — Jew or Gentile — put right with God?” His answer: not by the Law, not by ethnicity, but by grace through faith in Christ, because sin is the universal human plight. The Church, in defining the Immaculate Conception, is answering, “Could God, by the merits of Christ, preserve one creature from sin from the first moment of her existence to prepare her to bear his Son?” Her answer: yes, and he did. These answers do not collide. The verse that Protestants reach for to disprove Mary’s sinlessness, when read on its own terms, leaves the door to a Christ-merited exception wide open — and the Church has simply walked through it, giving all the glory to the Savior who made it possible.
References
Catholic Answers. (2004). “All have sinned” and the Immaculate Conception. https://www.catholic.com/qa/all-have-sinned-and-the-immaculate-conception
Catholic Answers. (2025, May 30). Hail Mary, conceived without sin. https://www.catholic.com/magazine/print-edition/hail-mary-conceived-without-sin
Catechism of the Catholic Church (2nd ed.). (1997). Libreria Editrice Vaticana.
Council of Trent. (1978). Session V: Decree concerning original sin (H. J. Schroeder, Trans.). TAN Books. (Original work promulgated 1546)
Council of Trent. (1978). Session VI: Decree concerning justification (H. J. Schroeder, Trans.). TAN Books. (Original work promulgated 1547)
Dunn, J. D. G. (1988). Romans 1–8 (Word Biblical Commentary, Vol. 38A). Word Books.
The Holy Bible: Douay-Rheims Version. (1971). Tan Books and Publishers. (Original work published 1899, Douay-Rheims American Edition, based on the Challoner revision of the original 1582/1609–1610 Douay-Rheims translation)
Lyons, E. (2007). Hyperbole: A common biblical figure of speech. Apologetics Press. https://apologeticspress.org/hyperbole-a-common-biblical-figure-of-speech-2407/
Moo, D. J. (1996). The epistle to the Romans (New International Commentary on the New Testament). Eerdmans.
Pius IX. (1854). Ineffabilis Deus. https://www.papalencyclicals.net/pius09/p9ineff.htm
