Why Do We Strike Our Breast During the Confiteor?

During Mass, there’s a familiar prayer and gesture many of us say and do without thinking much about it. As we pray the Confiteor, saying, “through my fault, through my fault, through my most grievous fault,” we strike our breast. Why? While this is a small gesture we can easily do out of habit, it gives our body a chance to join the prayer on our lips.

We find this gesture in Scripture. Jesus tells of a tax collector who prayed in the Temple. Unlike the Pharisee who prayed confidently about his own religious observance, the tax collector stood at a distance and would not “even raise his eyes to heaven.” Instead, he “beat his breast” and prayed, “O God, be merciful to me a sinner” (Luke 18:13). After Jesus died, Luke tells us that the crowds who witnessed what had happened returned home “beating their breasts” (Luke 23:48). Striking the breast could express sorrow and repentance in the biblical world.

The Catechism tells us that true penance begins in the conversion of our hearts. But authentic conversion of life doesn’t stop there; it wants to speak. It naturally seeks to express itself in “visible signs, gestures and works of penance.” This helps us see why we make this gesture at the Confiteor. Worship in the Catholic Church includes the whole person, not just the soul but the body as well. Our bodies can speak what is in our hearts.

The Roman Missal instructs us to strike our breast as we say, “through my fault, through my fault, through my most grievous fault.” It doesn’t specify how many times we should strike our breast. Many Catholics strike their breast three times, accompanying the threefold repetition of “my fault.” But the Church isn’t saying each strike means something different. It’s more important that we don’t simply go through the motions. Make sure your body says what your lips are praying: I acknowledge that I have sinned and I need God’s mercy.

At the Confiteor, I am confessing that I have sinned in my thoughts and in my words, in what I have done and in what I have failed to do. Striking my breast helps me make this acknowledgment personal. But it shouldn’t end there. We acknowledge our sins so that we can turn back to God. Christian repentance leads us to trust in God’s mercy and the grace that changes and heals our hearts. The Penitential Act does not replace the Sacrament of Penance. Here, as the Church gathered for Mass, we humbly admit our sins to Almighty God and ask for our brothers and sisters to pray for us.

So next time you pray the Confiteor, let the gesture come from the heart. Let your hand join your heart in prayer: Lord, I have sinned. I need your mercy. Help me return to you. Then continue the Mass trusting in the mercy of God.

Catechism Connection: Luke 18:9–14; Luke 23:44–48; CCC 1146, 1430–1433.

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