We need repentance. You see, repentance is not only going to a priest and confessing. We must free ourselves from the obsession of thoughts. We fall many times during our life, and it is absolutely necessary to reveal everything [in Confession] to a priest who is a witness to our repentance.Repentance is the renewal of life. This means we must free ourselves from all our negative traits and turn toward absolute good. No sin is unforgivable except the sin of unrepentance.
Why is it that it is often easier for us to confess our sins to God than to a brother? God is holy and sinless, He is a just judge of evil and the enemy of all disobedience. But a brother is sinful as we are. He knows from his own experience the dark night of secret sin. Why should we not find it easier to go to a brother than to the holy God? But if we do, we must ask ourselves whether we have not often been deceiving ourselves with our confession of sin to God, whether we have not rather been confessing our sins to ourselves and also granting ourselves absolution...Who can give us the certainty that, in the confession and the forgiveness of our sins, we are not dealing with ourselves but with the living God? God gives us this certainty through our brother. Our brother breaks the circle of self-deception. A man who confesses his sins in the presence of a brother knows that he is no longer alone with himself; he experiences the presence of God in the reality of the other person.
Christ became our Brother in order to help us. Through him our brother has become Christ for us in the power and authority of the commission Christ has given him. Our brother stands before us the sign of the truth and the grace of God. He has been given to us to help us. He hears the confession of our sins in Christ's stead and he forgives our sins in Christ's name. He keeps the secret of our confession as God keeps it. When I go to my brother to confess, I am going to God.