Prayers of Repentance

Repentance often begins with a sentence, not a speech. Each of these comes from Scripture or from the Church’s oldest prayers, and each has been enough for someone to come home.

A fuller prayer of repentance does three things: it names the sin honestly, it asks forgiveness without bargaining, and it promises, with God’s help, to change. It does not need to be eloquent. “I acknowledged my sin to you. I didn’t hide my iniquity. I said, I will confess my transgressions to the LORD, and you forgave the iniquity of my sin.” (Psalm 32:5).

People ask who prayed a prayer of repentance in the Bible. Many did, and their prayers are still the ones the Church uses.

• David, after the prophet Nathan confronted him over Bathsheba and Uriah: “I have sinned against the LORD.” And Nathan’s reply came at once: “The LORD also has put away your sin.” (2 Samuel 12:13). Tradition places Psalm 51 in the same moment.
• The prodigal son, rehearsing his speech on the way home: “Father, I have sinned against heaven and in your sight.” His father did not let him finish. “But while he was still far off, his father saw him and was moved with compassion, and ran, fell on his neck, and kissed him.” (Luke 15:18–20).
• The tax collector, standing at the back of the Temple, beating his breast: “God, be merciful to me, a sinner!” Jesus said he went home justified (Luke 18:9–14).
• St. Peter, who denied Christ three times: “The Lord turned and looked at Peter. … He went out, and wept bitterly.” (Luke 22:61–62). After the Resurrection, Christ asked him three times whether he loved him, and gave him his flock (John 21:15–17). Repentance undid the denial one question at a time.
• The good thief, crucified beside Jesus: “Lord, remember me when you come into your Kingdom.” (Luke 23:42).
• Daniel, confessing the sins of his whole people in exile: “we have sinned, and have dealt perversely, and have done wickedly, and have rebelled, even turning aside from your precepts and from your ordinances.” (Daniel 9:5).
• The prophet Joel, whose call the Church reads every Ash Wednesday: “Tear your heart and not your garments, and turn to the LORD, your God; for he is gracious and merciful, slow to anger, and abundant in loving kindness” (Joel 2:13).

The narrated prayer above quotes 2 Chronicles 7:14, God’s answer to Solomon at the dedication of the Temple. It was spoken to a whole people, and its promise is the same one every prayer of repentance rests on: God hears the humble who turn back to him.

Psalm 51, the Miserere, is the Church’s greatest prayer of repentance. It is prayed every Friday in the Liturgy of the Hours and at the start of Lent. Its opening verses are a whole examination of conscience in themselves:

Jesus began his preaching with one word: “Repent, and believe in the Good News.” (Mark 1:15). The Greek word, metanoia, means a change of mind, a turning around. The Catechism describes it this way: “Interior repentance is a radical reorientation of our whole life, a return, a conversion to God with all our heart, an end of sin, a turning away from evil,” and “it entails the desire and resolution to change one’s life, with hope in God’s mercy and trust in the help of his grace” (CCC 1431).

Three things follow from that.

• It is interior first. Jesus’ call “does not aim first at outward works,” but “at the conversion of the heart, interior conversion” (CCC 1430). Without it, outward penance is empty; with it, penance follows naturally.
• It is God’s work in us. “The human heart is heavy and hardened. God must give man a new heart” (CCC 1432). St. Paul says it is God’s goodness, not his threats, that “leads you to repentance” (Romans 2:4).
• It is never finished. The Catechism calls it “an uninterrupted task for the whole Church,” which is “at once holy and always in need of purification” (CCC 1428). Repentance is not a single event in a Christian life. It is how a Christian life moves.

St. Paul also distinguishes two kinds of sorrow: “For godly sorrow produces repentance leading to salvation, which brings no regret. But the sorrow of the world produces death.” (2 Corinthians 7:10). Godly sorrow turns toward God and gets up. Worldly sorrow turns in on itself and stays down.

The Catholic prayer of repentance, said in confession and traditionally every night, is the Act of Contrition. This is the traditional form most English-speaking Catholics learned:

A prayer of repentance is the beginning of something, not the end. What usually comes next:

1. Go to confession. For a Catholic, repentance for serious sin is completed in the sacrament of Penance, where Christ forgives through the priest. The Catechism notes that confessing, “even from a simply human point of view, frees us and facilitates our reconciliation with others” (CCC 1455). If it has been years, you are exactly who the sacrament is for; how to go to confession walks through every step, including what to say if you have forgotten how.
2. Examine your conscience first. The Catechism asks that confession be prepared by “an examination of conscience made in the light of the Word of God” (CCC 1454). There is a guided one in the examination of conscience.
3. Repair what you can. “One must do what is possible in order to repair the harm (e.g., return stolen goods, restore the reputation of someone slandered, pay compensation for injuries)” (CCC 1459). Apologize to the person you hurt, if it is safe and wise to do so.
4. Change the circumstances. The Act of Contrition promises to “avoid the near occasions of sin.” Delete the app, end the arrangement, stop going to that place, tell a friend.
5. Accept the forgiveness. Do not keep confessing what has already been forgiven. “Though your sins are as scarlet, they shall be as white as snow.” (Isaiah 1:18).

And rejoice, because heaven does: “there will be more joy in heaven over one sinner who repents” (Luke 15:7).

Many people searching for a prayer of repentance are struggling with lust or pornography, often for years, often in secret, and often with the sense that they have repented of the same thing so many times it no longer counts. It counts. Every return is a real return. Christ promised the vision of God to the pure of heart (Matthew 5:8), and purity is something he gives, not only something we achieve.

There is a difference between repentance and despair, and Scripture shows it in two apostles on the same night. Both betrayed Christ. Peter wept and came back; Judas could not believe he could be forgiven. The Catechism names despair as a sin precisely because it is “contrary to God’s goodness” and “to his mercy” (CCC 2091): no sin is bigger than God’s willingness to forgive it.

Some people find they cannot stop confessing the same sins, cannot believe they are forgiven, or are tormented by fear that they have sinned when they have not. That can be scrupulosity, which is a real and treatable condition; tell your confessor, and a doctor if it does not ease. And if guilt or shame has become so heavy that you are thinking of harming yourself or ending your life, please reach out now:

Many of the prayers of repentance you will find online are versions of the “sinner’s prayer” from evangelical Protestant preaching: a single prayer, said once, asking Jesus into your heart. Catholics share its heart, turning to Christ in faith and sorrow, and anyone may pray it sincerely. But Catholics understand repentance differently in two ways. First, the first great turning to God is Baptism, and for a Christian who has fallen away, the ordinary way home is the sacrament of Confession, not a formula. Second, repentance is not a single moment but, in the Catechism’s words, an “uninterrupted task” (CCC 1428): Catholics repent every night in the examination of conscience, at the start of every Mass, and in confession for as long as they live.