1425 “You were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and in the Spirit of our God.” One must appreciate the magnitude of the gift God has given us in the sacraments of Christian initiation in order to grasp the degree to which sin is excluded for him who has “put on Christ.” But the apostle John also says: “If we say we have no sin, we deceive ourselves, and the truth is not in us.” And the Lord himself taught us to pray: “Forgive us our trespasses,” linking our forgiveness of one another’s offenses to the forgiveness of our sins that God will grant us.
1426 Conversion to Christ, the new birth of Baptism, the gift of the Holy Spirit and the Body and Blood of Christ received as food have made us “holy and without blemish,” just as the Church herself, the Bride of Christ, is “holy and without blemish.” Nevertheless the new life received in Christian initiation has not abolished the frailty and weakness of human nature, nor the inclination to sin that tradition calls concupiscence, which remains in the baptized such that with the help of the grace of Christ they may prove themselves in the struggle of Christian life. This is the struggle of conversion directed toward holiness and eternal life to which the Lord never ceases to call us.
1441 Only God forgives sins. Since he is the Son of God, Jesus says of himself, “The Son of man has authority on earth to forgive sins” and exercises this divine power: “Your sins are forgiven.” Further, by virtue of his divine authority he gives this power to men to exercise in his name.
1442 Christ has willed that in her prayer and life and action his whole Church should be the sign and instrument of the forgiveness and reconciliation that he acquired for us at the price of his blood. But he entrusted the exercise of the power of absolution to the apostolic ministry which he charged with the “ministry of reconciliation.” The apostle is sent out “on behalf of Christ” with “God making his appeal” through him and pleading: “Be reconciled to God.”