The Act of Contrition: Traditional, Old and Modern Versions

The prayer of a sorry heart, for confession and for every night

The Act of Contrition is a short Catholic prayer in which you tell God you are sorry for your sins, because they offend him who is all good, and resolve with his grace to sin no more. The traditional version begins "O my God, I am heartily sorry for having offended Thee". The modern version, from the Rite of Penance, begins "My God, I am sorry for my sins with all my heart". You pray it in confession after the priest gives you your penance, and Catholics pray it every night before sleep.

Below are all the common versions, including the older Baltimore Catechism wording, a short form and the Spanish, with what each line means, which one to use, and what the Church teaches about contrition that forgives even outside confession. Learn one version by heart this week. It is the prayer you most need to have ready at the hour you least expect.

Saint Peter in Tears by El Greco

The Act of Contrition: Every Common Version

The traditional Act of Contrition

O my God, I am heartily sorry for having offended Thee, and I detest all my sins because of Thy just punishments, but most of all because they offend Thee, my God, who art all good and deserving of all my love. I firmly resolve, with the help of Thy grace, to sin no more and to avoid the near occasion of sin. Amen.

The version most English-speaking Catholics learned, and the one most often printed in confessionals.

The older version (Baltimore Catechism)

O my God, I am heartily sorry for having offended Thee, and I detest all my sins, because I dread the loss of heaven and the pains of hell; but most of all because they offend Thee, my God, who art all good and deserving of all my love. I firmly resolve, with the help of Thy grace, to confess my sins, to do penance, and to amend my life. Amen.

The wording of the Baltimore Catechism, used across the United States for most of the twentieth century.

The modern Act of Contrition (Rite of Penance)

My God, I am sorry for my sins with all my heart. In choosing to do wrong and failing to do good, I have sinned against you whom I should love above all things. I firmly intend, with your help, to do penance, to sin no more, and to avoid whatever leads me to sin. Our Saviour Jesus Christ suffered and died for us. In his name, my God, have mercy. Amen.

From the English translation of the Rite of Penance, the revised rite of confession issued after the Second Vatican Council.

A prayer of the penitent from the Rite of Penance

Father of mercy, like the prodigal son I return to you and say: "I have sinned against you and am no longer worthy to be called your son." Christ Jesus, Saviour of the world, I pray with the repentant thief to whom you promised Paradise: "Lord, remember me in your kingdom." Holy Spirit, fountain of love, I call on you with trust: "Purify my heart, and help me to walk as a child of light." Amen.

One of the alternative prayers of sorrow in the Rite of Penance, built on Luke 15:21 and Luke 23:42.

A short Act of Contrition

O God, be merciful to me, a sinner. Amen.

The tax collector's prayer (Luke 18:13). If your mind goes blank in the confessional, this is enough, with a sincere heart.

A simple version for children

My God, I am sorry for my sins because I have hurt you, and you are so good. I love you above all things. With your help I will try not to sin again, and I will stay away from what leads me into sin. Amen.

A plain version by Catholic/Christian for a first confession. Parishes teach several similar forms; use the one your child's catechist uses.

Acto de contrición (Spanish)

Señor mío Jesucristo, Dios y Hombre verdadero, Creador, Padre y Redentor mío; por ser Tú quien eres, Bondad infinita, y porque te amo sobre todas las cosas, me pesa de todo corazón haberte ofendido; también me pesa porque puedes castigarme con las penas del infierno. Ayudado de tu divina gracia, propongo firmemente nunca más pecar, confesarme y cumplir la penitencia que me fuere impuesta. Amén.

The traditional Spanish act of contrition, prayed across Spain and Latin America.

What Is Contrition?

Contrition is sorrow for sin with the resolution not to sin again. The Council of Trent defined it, and the Catechism repeats the definition: "sorrow of the soul and detestation for the sin committed, together with the resolution not to sin again" (CCC 1451). Every Act of Contrition puts those three things into words: I am sorry, I hate what I did, and with God's help I will not do it again.

The Church distinguishes two kinds. Perfect contrition comes from love of God above all else: you are sorry because you have offended someone infinitely good. Imperfect contrition, also called attrition, comes from lesser but real motives, such as the ugliness of sin or fear of hell. Attrition is a gift of God too, and in the sacrament of confession it is enough for forgiveness (CCC 1452 to 1453).

That is why the traditional prayer names both motives. "Because of Thy just punishments" is attrition. "But most of all because they offend Thee" reaches for perfect contrition. You say both, and you ask God to grow the second.

Old, Traditional or Modern: Which Version Should You Use?

Use any version you can pray sincerely. The Church does not require one form, and every priest will accept any genuine prayer of sorrow, including your own words. The versions differ in emphasis.

Pick one and learn it by heart. Say it every night for a week and it is yours. If you were taught one version as a child and your parish now prints another, use whichever you know. God is listening to the heart, and the priest is listening for sorrow.

What the Act of Contrition Means, Line by Line

Each line of the traditional Act of Contrition does a specific job. Pray it slowly once with these notes and you will never rattle it off again.

When to Say the Act of Contrition in Confession

In confession you say the Act of Contrition after you have confessed your sins and the priest has given you counsel and a penance. He will invite you to express your sorrow. Pray your Act of Contrition aloud, and then he extends his hand and prays the words of absolution. Some priests begin the absolution while you are still praying, which is normal.

If you forget the words, read them from the card most confessionals keep on the wall, or tell the priest, and he will lead you line by line. Nobody is graded. For the whole sequence, from "Bless me, Father" to the final "Amen", see our step-by-step guide on how to go to confession, and prepare beforehand with our examination of conscience.

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Can an Act of Contrition Forgive Sins Without Confession?

Yes, in a specific case. The Catechism teaches that perfect contrition, sorrow out of love for God, "obtains forgiveness of venial sins; it also obtains forgiveness of mortal sins if it includes the firm resolution to have recourse to sacramental confession as soon as possible" (CCC 1452). In March 2020, when churches closed during the pandemic, Pope Francis reminded Catholics of exactly this: if you cannot get to a priest, tell God the truth, ask his pardon with all your heart, and promise to go to confession when you can.

This teaching is for emergencies and for every night of your life. It is no way around the sacrament. A Catholic who knows he is in mortal sin must still go to confession before receiving Communion (CCC 1457), and the promise to confess is part of the contrition itself. Think of it as the bridge that holds you until you reach the confessional.

At a deathbed or in danger of death, help the person pray an Act of Contrition, even the short one, and call a priest at once. Our page of prayers for the sick and dying has what to say and do.

Pray the Act of Contrition Every Night

The best habit you can build around this prayer is a nightly Act of Contrition after a two-minute review of your day. Think back over the day, thank God for one good thing, notice where you sinned, then pray the Act of Contrition and go to sleep at peace. If you died in the night, you would want that to be your last prayer.

Our Catholic night prayer page sets this inside a short bedtime routine, and the same review before confession becomes a full examination. Done every night, it also shows you patterns: the same sin, the same time of day, the same trigger. That is where real change starts.

How Other Christians Pray Sorrow for Sin

Every Christian tradition prays words of repentance, because Scripture does: "If we confess our sins, he is faithful and just, and will forgive our sins" (1 John 1:9).

The words differ. The sorrow is the same, and God has never once turned it away (Psalm 51:17).

Frequently Asked Questions

What is the Act of Contrition prayer?

O my God, I am heartily sorry for having offended Thee, and I detest all my sins because of Thy just punishments, but most of all because they offend Thee, my God, who art all good and deserving of all my love. I firmly resolve, with the help of Thy grace, to sin no more and to avoid the near occasion of sin. Amen.

What is the modern Act of Contrition?

My God, I am sorry for my sins with all my heart. In choosing to do wrong and failing to do good, I have sinned against you whom I should love above all things. I firmly intend, with your help, to do penance, to sin no more, and to avoid whatever leads me to sin. Our Saviour Jesus Christ suffered and died for us. In his name, my God, have mercy. Amen.

When do you say the Act of Contrition in confession?

You say the Act of Contrition after you have confessed your sins and the priest has given you a penance. He invites you to express your sorrow, you pray the Act of Contrition aloud, and then he prays the words of absolution.

What if I forget the Act of Contrition in confession?

Read it from the card most confessionals keep on the wall, or tell the priest, and he will lead you through it. You can also simply say, "O God, be merciful to me, a sinner" (Luke 18:13). Any sincere prayer of sorrow is acceptable.

Does an Act of Contrition forgive mortal sin?

Perfect contrition, sorrow out of love for God, forgives mortal sins if it includes the firm resolution to go to sacramental confession as soon as possible (CCC 1452). You must still confess those sins before receiving Communion (CCC 1457).

What is the difference between perfect and imperfect contrition?

Perfect contrition is sorrow for sin out of love for God above all else. Imperfect contrition, or attrition, comes from lesser motives such as the ugliness of sin or fear of punishment. Imperfect contrition is enough for forgiveness in the sacrament of confession (CCC 1452 to 1453).

You will need this prayer at an hour you do not expect

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