Can salvation be lost? To this question, the Catholic Church answers clearly: yes. Salvation is not a permanent possession that nothing can take away once received; it is a life of grace that can be nourished, wounded, lost — and regained. A baptized person who commits a mortal sin truly separates themselves from God and loses the state of grace; if they die in this state without repenting, they are lost forever.
This answer is neither a threat nor a cause for anxiety. It is the flip side of a luminous truth: God created us free, and love that does not involve freedom is not love. If salvation could never be lost, it would mean we are not truly free to say no. The whole challenge of the Christian life lies here: not to secure once and for all a “ticket to Heaven,” but to remain in God’s love until the end.
Catholic teaching here clearly differs from the Protestant doctrine of eternal security — summarized by the phrase “once saved, always saved” — which holds that the true believer can never fall away. This article explains what the Church teaches, why, and how Scripture supports it. It also shows how to live this truth without falling into the two opposite traps of presumption and despair.
The short answer: yes, salvation can be lost
Let’s say it plainly. According to Catholic faith, a Christian who has received the grace of baptism can lose it through their own fault, and then risks eternal damnation if they persist in rejecting God until death. The Catechism states this unambiguously about mortal sin:
“Mortal sin … causes the loss of charity and the privation of sanctifying grace, that is, the state of grace. If it is not redeemed by repentance and God’s forgiveness, it brings exclusion from Christ’s kingdom and eternal death in hell.”
— Catechism of the Catholic Church, § 1861[1]
We must immediately avoid a caricature. Saying that salvation can be lost does not mean the Christian lives hanging by a thread, losing and regaining Heaven with every fault. Venial sin — the lesser fault — wounds charity without destroying it and does not cause the loss of grace. Only mortal sin, by definition grave and strictly defined, breaks friendship with God. And even then, return is always offered through the sacrament of confession. Salvation can be lost, but it can be found again.
What does “being saved” mean?
To understand how salvation can be lost, we must first understand what it is. Much confusion arises from a too static image: imagining salvation as a certificate issued once and for all, a closed file. Scripture speaks differently — as a living reality unfolding over time.
Salvation is expressed in three tenses
The New Testament speaks of salvation in the past, present, and future. Saint Paul can write that we “have been saved” (Rom 8:24; Eph 2:5-8), that we “are being saved” (1 Cor 1:18), and that we “will be saved” (Rom 5:9-10)[2]. This is not a contradiction: it means the same gift has a root, growth, and completion. We have been justified at baptism; we are saved insofar as we remain in grace and cooperate with God’s work; we will be definitively saved if we persevere to the end.
It is this dimension of growth and perseverance that the “once saved, always saved” thesis overlooks. Completed salvation is the object of a hope, not a possession already guaranteed. For the full definition of this grace received at baptism, see the article What is salvation?; for the moment when God makes us righteous, see What is justification?.
A gift received, but not yet possessed
Salvation is first and foremost pure grace: no one saves themselves by their own strength, and it is Christ alone who frees us from sin and death. But God, who created us without us, does not save us without us. The grace received calls for a free response that lasts a lifetime. That is why Saint Paul, the apostle of grace par excellence, exhorts already baptized Christians:
“Work out your salvation with fear and trembling.”
— Saint Paul, Letter to the Philippians 2:12[3]
This statement would be absurd if salvation were an untouchable possession. One does not work “with fear and trembling” to keep what one cannot lose anyway.
What Causes the Loss of Salvation: Mortal Sin
Grace is not lost by accident, weakness, or a slight fault. It is lost through an act that deliberately breaks friendship with God: mortal sin. The Catechism provides the decisive definition:
“Mortal sin destroys charity in the heart of man by a grave violation of God’s law; it turns man away from God […] by preferring an inferior good to Him. Venial sin allows charity to subsist, even though it offends and wounds it.” — Catechism of the Catholic Church, § 1855[4]
The Three Conditions of Mortal Sin
For a sin to be mortal, three conditions must be met together: there must be grave matter, committed with full knowledge, and with deliberate consent[5]. If one is lacking — for example, invincible ignorance or coercion that removes freedom — responsibility is diminished and the fault may not be mortal. This requirement is protective: it forbids lightly labeling an act as “mortal sin” and leaves the judgment of persons to God alone. For the distinction between the two orders of faults, see What is the difference between mortal sin and venial sin?.
Sanctifying Grace, the Life of the Soul
What is lost in mortal sin has a precise name: sanctifying grace. It is the very life of God communicated to the soul, which makes us adopted children and “partakers of the divine nature” (2 Pt 1:4). To lose sanctifying grace is therefore to suffer a true spiritual death: the soul remains naturally alive, but is deprived of the supernatural life that united it to God. This is why tradition speaks of the sinner as a dead person who must be resurrected. On this divine life within us, see What is sanctifying grace?.
Can One Also Lose Faith Itself?
Yes, and this is even the most radical case. Mortal sin does not necessarily cause the loss of faith: one can truly believe and still sin gravely. But certain sins — apostasy, obstinate heresy — attack faith itself. The Catechism warns that faith is a gift that can be lost:
“Faith is a free gift that God makes to man. This priceless gift can be lost. Saint Paul warns Timothy: ‘Fight the good fight, holding faith and a good conscience; by rejecting this, some have made shipwreck of their faith’ (1 Tm 1:18-19).” — Catechism of the Catholic Church, § 162[6]
This image of the shipwreck of faith, borrowed from Saint Paul, is taken up by the entire tradition to describe the loss of salvation — and its remedy.
The Council of Trent: Grace is Lost by Any Mortal Sin
In the 16th century, the Protestant Reformation directly posed the question: can the justified fall away? For Luther and even more for Calvin, the certainty of salvation was at the heart of the believer’s experience. The Council of Trent, in its great decree on justification (session VI, 1547), responded point by point, and its definitions remain the most precise Catholic reference on the subject.
Against the Reformers’ “Vain Confidence”
Trent first affirms that the grace received is lost not only by the loss of faith but by any mortal sin:
“The grace received in justification is lost not only by infidelity, which causes the loss of faith itself, but also by any other mortal sin, even though faith is not lost.” — Council of Trent, session VI, chapter 15[7]
The Canons That Settle the Question
The council then explicitly condemned, by canons, contrary theses. Two of them directly address our question:
“If anyone says that a man once justified cannot sin nor lose grace, and that therefore he who falls and sins was never truly justified […] let him be anathema.” — Council of Trent, session VI, canon 23[8]
“If anyone says that there is no other mortal sin than that of infidelity, or that grace once received is not lost by any other sin, however grave and enormous, except that of infidelity: let him be anathema.” — Council of Trent, session VI, canon 27[9]
Canon 23 precisely targets the argument later taken up by defenders of eternal security: “If anyone falls, it means he was never truly saved.” Trent replies no: one can have been truly justified and truly fall away.
No Absolute Certainty of Salvation
Trent draws the practical consequence. Since grace can be lost, no one can claim, without a special revelation from God, to know with infallible certainty that he will be saved:
“If anyone says that he will certainly have, with absolute and infallible certainty, the great gift of perseverance to the end — unless he has learned it by a special revelation: let him be anathema.” — Council of Trent, session VI, canon 16[10]
This is not a call to anxiety but to humility: the Christian advances in a firm hope, relying on God’s faithfulness, without ever turning this hope into an automatic guarantee that would dispense vigilance. The question of certainty is developed in Is assurance of salvation biblical?.
What does the Bible say? Warnings from the New Testament
Catholic doctrine is not a late construction: it continues a constant emphasis of the New Testament, which multiplies warnings addressed to believers already on the path. These texts would be incomprehensible if falling away were impossible.
Saint Paul fears being disqualified himself
The Apostle, who knew he was chosen by Christ, did not consider himself immune:
“On the contrary, I bruise my body and drag it into slavery, for fear that after proclaiming to others, I myself should be disqualified.” — Saint Paul, First Letter to the Corinthians 9:27[11]
And he warns all believers: “Therefore let him who thinks he stands take heed lest he fall” (1 Cor 10:12). To the Galatians who sought justification through the Law, he declares even more severely: “You who are trying to be justified by the law have fallen from grace” (Gal 5:4)[12]. One only “falls away” from what one truly possessed.
The branches cut off and burned
Jesus himself uses a striking image of lost belonging. The branch that does not remain in the vine — Christ — is cut off:
“If anyone does not abide in me, he is thrown away like a branch and withers; and the branches are gathered, thrown into the fire, and burned.” — Jesus, Gospel of John 15:6[13]
The branch he speaks of was indeed attached to the vine: it was cut off because it ceased to bear fruit.
Apostasy after enlightenment
The Letter to the Hebrews describes the gravest case, that of fully initiated Christians who turn away:
“For it is impossible for those who were once enlightened, who tasted the heavenly gift […] and who nevertheless fell away, to renew them a second time by bringing them to repentance.” — Letter to the Hebrews 6:4-6[14]
The same letter adds: “If we deliberately keep on sinning after we have received the knowledge of the truth, no sacrifice for sins is left” (Heb 10:26). And Saint Peter concludes, regarding those who return to sin after knowing Christ: “Their last state has become worse than the first” (2 Pet 2:20).
According to the constant Catholic interpretation, this “impossibility” is not a condemnation without recourse — Saint John Chrysostom already taught it: repentance remains, but there is no second baptism (Homily 9 on the Epistle to the Hebrews, 8). What cannot be repeated is baptism — one does not “renew” a second time through a new baptism. It is precisely for those who fell after baptism that Christ instituted another sacrament of restoration: Penance (see below, “Confession, the ‘Second Plank after Shipwreck’”).
“The one who perseveres to the end”
The entire logic of the New Testament finally rests on a condition Jesus repeats: salvation is promised to the one who perseveres.
“But he who endures to the end will be saved.” — Jesus, Gospel of Matthew 24:13[15]
Similarly, in the book of Revelation: “Be faithful until death, and I will give you the crown of life” (Rev 2:10). The crown is promised not to the one who believed once, but to the one who remains faithful until death.
“Once saved, always saved”: the doctrine of eternal security
Faced with these texts, a large part of the Protestant world nevertheless holds that the true believer cannot lose their salvation. This is the doctrine of the “perseverance of the saints” (the fifth point of Calvinism) and, in its popular evangelical version, “once saved, always saved.” For fairness, the best arguments for this position must first be presented before responding.
The best arguments for eternal security
Defenders of this thesis rely on real and strong texts. The most cited is Jesus’ word about his sheep:
“I give them eternal life, and they shall never perish; no one will snatch them out of my hand.” — Jesus, Gospel of John 10:28[16]
They also invoke Paul’s assurance: “Neither death nor life […] will be able to separate us from the love of God” (Rom 8:38-39)[17]; and his confidence: “He who began a good work in you will carry it on to completion until the day of Christ Jesus” (Phil 1:6)[18]. The Westminster Confession of Faith (1646) devotes a whole chapter to this “perseverance of the saints,” and the Canons of Dordrecht (1619) make it an article of faith: the elect, regenerated, cannot totally or finally fall away from grace[19][20]. To avoid contradicting biblical warnings, this doctrine adds a distinction: the one who apostasizes “was never truly regenerated”; their fall only proves their faith was illusory.
The Catholic response
The argument is coherent but stumbles on several decisive points—and since it appeals to Scripture, it can be answered on Scripture’s own ground.
First, the texts about security do not say what they are made to say. When Jesus says “no one will snatch them out of my hand” (Jn 10:28), he excludes that an external force—the devil, persecution, death—can snatch us from Christ. He does not say the sheep cannot stray on their own from the fold. Likewise, the list in Romans 8 enumerates external powers (“death, life, angels, principalities…”); it does not mention the one thing capable of separating us from God: our own freely consented sin. As for Philippians 1:6, it is an expression of confident hope, not an infallible individual guarantee—the same letter commands two chapters later to “work out your salvation with fear and trembling” (Phil 2:12).
Second, the distinction “he was never truly saved” turns against itself. This is precisely the thesis condemned by Canon 23 of Trent. It renders the warnings of Scripture meaningless: why would Paul fear being “disqualified” (1 Cor 9:27), why warn believers they can “fall from grace” (Gal 5:4), if such a fall were impossible in principle for a true justified person? One does not warn against a danger that does not exist.
Third, this thesis weakens freedom and risks presumption. If nothing can make me lose salvation, then my moral choices no longer determine my eternal destiny. This opens the door to what the Catechism calls presumption. The full development of this objection is found in Can a Christian lose their salvation? and, for the debate on justification, in Are we saved by faith alone?.
Four Perspectives on the Loss of Salvation
The major Christian traditions do not say the same thing on this point. The following table summarizes their positions, from the most “reassuring” to the most demanding.
| Position | Can salvation be lost? | Central argument | Main difficulty |
|---|---|---|---|
| Evangelical eternal security (once saved, always saved) | No, never, from conversion onward | Jesus’ promise in Jn 10:28 | Empties biblical warnings of meaning |
| Perseverance of the saints (Calvinism) | No for the true elect; the apostate was never regenerated | Unconditional decree of election | No one can know if they are elect |
| Lutheranism | Yes, by losing faith | Faith alone saves, so loss of faith loses salvation | Admits falling through sin against conscience, and return through repentance (Augsburg, art. XII; Formula of Concord) — but measures loss by faith alone, where Trent sees every mortal sin as causing the loss of grace (canon 27) |
| Catholicism | Yes, by any mortal sin; regained by penance | Trent, session VI; NT warnings | Requires vigilance and perseverance to the end |
The reading of the table is simple: only Catholicism holds together the real gravity of sin (one can lose everything) and the real mercy of God (one can regain everything), without falling into either false security or despair.
How Does One Regain Lost Salvation?
Here is the heart of the Catholic good news: lost salvation is never lost without recourse. As long as a person lives, the way back is offered. This is precisely why Christ instituted, after baptism, a second sacrament of healing.
Confession, the “Second Plank after Shipwreck”
Taking up the image of the shipwrecked man clinging to a plank — used by Tertullian on penance (On Penitence, 4), then by Saint Jerome (Letter 130 to Demetrias, 9) — the Council of Trent called the sacrament of Penance the second plank of salvation, from its decree on justification (session VI, chapter 14), before devoting the whole decree on Penance to it (session XIV):
“For those who have fallen into sin after baptism, this sacrament of Penance is as necessary for salvation as baptism is for those not yet regenerated.” — Council of Trent, session XIV, on the sacrament of Penance[21]
The image is clear: baptism is the ship that carries us; if we are shipwrecked by mortal sin, confession is the plank to which we cling to reach the shore. It does not replace baptism—it restores it. That is why the Catechism calls penance a true “spiritual resurrection”[22]. For practical guidance, see How to Make a Good Confession.
The Father Running to Meet the Son
The loss and return of salvation received its most beautiful illustration from the mouth of Christ: the parable of the prodigal son (Lk 15:11-32). The son who demands his inheritance, squanders it, and falls into misery is the image of the baptized who loses grace. But the father has not erased him from his household: he watches for his return, runs to meet him, and restores him to his dignity as son. The father’s words say it all about salvation regained: “this son of mine was dead and is alive again; he was lost and is found” (Lk 15:24)[23]. A simple sincere repentance—contrition—always reopens the door to return.
Living Without Anxiety: Between Presumption and Despair
That salvation can be lost should not produce unhealthy fear. The right attitude is neither false complacency nor gnawing anxiety, but hope—a virtue that stands equidistant from two opposing faults the Catechism calls sins against hope.
Presumption: Believing One Cannot Lose Salvation
The first trap is presumption. The Catechism distinguishes two forms:
“Either man presumes upon his own capacities (hoping to save himself without help from above), or he presumes upon the omnipotence or mercy of God (hoping to obtain forgiveness without conversion and glory without merit).” — Catechism of the Catholic Church, § 2092[24]
Eternal security misunderstood leans toward the second: relying on God’s mercy to be saved without conversion. This forgets that mercy never forces freedom: God always forgives, but He does not forgive against our will.
Despair: Believing One Can No Longer Be Saved
The opposite trap is despair, by which “man ceases to hope for his personal salvation from God, for help in attaining it, or for the forgiveness of his sins”[25]. It is the temptation of the soul overwhelmed by its faults, believing itself too far gone to return. Yet no sin exceeds God’s mercy for the repentant. Saint Thomas Aquinas sees in despair the refusal to hope to share in God’s goodness (Summa Theologiae, IIa-IIae, q. 20, a. 3): by refusing to believe in forgiveness, the soul closes itself to His mercy.
Filial Fear and Trust
Between the two, Scripture recommends a filial fear—not the terror of a slave, but the delicacy of a son who fears wounding a beloved father. This is the meaning of “fear and trembling” in Philippians 2:12. This fear does not oppose trust: it keeps it alive. The balanced Christian lives in great confidence grounded in Christ’s merits, and holy vigilance grounded in awareness of one’s fragility.
The Gift of Final Perseverance
What remains is the grace of graces: to die in the state of grace. This is what tradition calls the gift of final perseverance, to which Saint Augustine devoted an entire treatise. This gift is not properly earned; it is asked for. Saint Alphonsus Liguori, Doctor of the Church, made this the thesis of his famous treatise on prayer: ordinary graces are given generously, but “other graces, especially the gift of perseverance, are granted only to those who pray.” Hence his blunt formula:
“He who prays is certainly saved; he who does not pray is certainly damned.” — Saint Alphonsus Liguori, The Great Means of Prayer, chapter I[26]
Such is the Catholic balance: to take seriously the possibility of losing salvation without ever losing trust; to watch without trembling; to ask each day for the grace to end in friendship with God. How to grow in this fidelity is developed in How to Grow in Perseverance.
In summary
Can salvation be lost? Yes. A baptized person who commits a mortal sin loses the state of grace and risks eternal loss if they die without repentance. This is the constant teaching of Scripture—which issues numerous warnings to believers—and the explicit definition of the Council of Trent, against the Protestant doctrine of eternal security. But this serious truth is inseparable from another, joyful one: lost salvation is always regained through repentance and confession, “the second plank after shipwreck.” It is up to the Christian to live between presumption and despair, in firm hope and confident vigilance, asking each day for the gift of final perseverance.
For further reading
- What is salvation? — the gift received at baptism and its scope.
- What is justification? — how God makes us righteous.
- Can a Christian lose their salvation? — a detailed refutation of “once saved, always saved.”
- Is assurance of salvation biblical? — can we have certainty of being saved?
- Are we saved by faith alone? — the debate on sola fide.
- What is the difference between mortal sin and venial sin?
- What is sanctifying grace? — the divine life within us.
- How to make a good confession? — recovering lost grace.
- How to grow in perseverance?
Notes and References
Catechism of the Catholic Church, § 1861, Mame/Plon, 1992. The text adds: “our freedom having the power to make choices forever, without return.”
1On the three times of salvation in Saint Paul: “saved” in the past (Rm 8:24; Eph 2:5-8), “being saved” in the present or ongoing (1 Cor 1:18), “will be saved” in the future (Rm 5:9-10), Jerusalem Bible.
2Saint Paul, Letter to the Philippians 2:12, Jerusalem Bible, Cerf edition. Text (abridged): “Therefore, my beloved, as you have always obeyed, so now, not only as in my presence but much more in my absence, work out your salvation with fear and trembling.”
3Catechism of the Catholic Church, § 1855. Cf. §§ 1854-1864 on the distinction between mortal and venial sin.
4Catechism of the Catholic Church, § 1857: “For a sin to be mortal, three conditions together are required: ‘Mortal sin is any sin whose object is grave matter, and which is committed with full knowledge and deliberate consent’” (quoting the apostolic exhortation Reconciliatio et Paenitentia, 17).
5Catechism of the Catholic Church, § 162, quoting First Letter of Saint Paul to Timothy 1:18-19.
6Council of Trent, session VI (January 13, 1547), Decree on Justification, chapter 15. Denzinger-Schönmetzer (DS) 1544. Latin text: “gratiam iustificationis amitti non solum per infidelitatem, qua etiam ipsa fides amittitur, sed etiam per quodcumque aliud mortale peccatum, quamvis non amittatur fides.”
7Council of Trent, session VI, canon 23. DS 1573. Latin text: “If anyone says that a man once justified can neither sin any more nor lose grace, let him be anathema.”
8Council of Trent, session VI, canon 27. DS 1577. Latin text: “If anyone says that there is no mortal sin except infidelity, or that no other sin, however grave and enormous, except infidelity, causes the loss of grace, let him be anathema.”
9Council of Trent, session VI, canon 16. DS 1566. On the impossibility of absolute and infallible certainty of final perseverance without special revelation.
10Saint Paul, First Letter to the Corinthians 9:27, Jerusalem Bible. The Greek adokimos means “rejected, disqualified, failed the test.”
11Saint Paul, Letter to the Galatians 5:4, Jerusalem Bible: “You have severed yourself from Christ, you who would be justified by the law; you have fallen away from grace.” The Greek verb ekpiptô means “to fall from, to be deprived of.”
12Gospel according to Saint John 15:6, Jerusalem Bible. Discourse on the vine and branches (Jn 15:1-8).
13Letter to the Hebrews 6:4-6, Jerusalem Bible. Cf. Heb 10:26-31 on willful sin after knowledge of the truth.
14Gospel according to Saint Matthew 24:13, Jerusalem Bible, Cerf edition: “But he who endures to the end will be saved.” Parallel in Mt 10:22: “but he who endures to the end will be saved.”
15Gospel according to Saint John 10:28-29, Jerusalem Bible. Text cited by proponents of eternal security.
16Saint Paul, Letter to the Romans 8:38-39, Jerusalem Bible. The Pauline list enumerates external powers (death, life, angels, principalities, present, future); it does not mention the freely consented sin of the believer.
17Saint Paul, Letter to the Philippians 1:6, Jerusalem Bible. Expression of the Apostle’s confident hope for the community, which the same letter tempers by the call to work out salvation “with fear and trembling” (Phil 2:12).
18Westminster Confession of Faith (1646), chapter XVII, “Of the Perseverance of the Saints”: the justified “cannot totally nor finally fall away from the state of grace.” Reference text of Reformed Presbyterianism.
19Canons of Dordrecht (Synod of Dordrecht, 1618-1619), fifth doctrinal head, “The Perseverance of the Saints” — the fifth point of Calvinism (the “P” in the acronym TULIP: Perseverance of the Saints).
20Council of Trent, session XIV (November 25, 1551), Doctrine on the Sacrament of Penance, chapter 2. DS 1672: “this sacrament of Penance is, for those who have fallen after baptism, necessary for salvation as baptism itself is for those not yet regenerated.” The formula of the “second plank after shipwreck” (secundam post naufragium deperditae gratiae tabulam) belongs to chapter 14 of session VI on justification, “De lapsis” (DS 1542).
21Catechism of the Catholic Church, § 1468, on the effects of the sacrament of Penance: it effects a “true ‘spiritual resurrection’” and restores the dignity and goods of the life of the children of God.
22Gospel according to Saint Luke 15:11-32 (parable of the prodigal son), Jerusalem Bible. Verse 24 — “he was dead and is alive again; he was lost and is found” — is the evangelical image of grace lost and then recovered.
23Catechism of the Catholic Church, § 2092, on the two forms of presumption, sin against hope.
24Catechism of the Catholic Church, § 2091, on despair, sin against hope.
25Saint Alphonsus Liguori, The Great Means of Prayer (Del gran mezzo della preghiera, Naples, 1759), chapter I. Saint Alphonsus teaches there that final perseverance is a grace infallibly obtained through persevering prayer. Cf. also Saint Augustine, De dono perseverantiae (The Gift of Perseverance, 428-429).
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