Let each one confess his sin, I beseech you, brethren, while he who has sinned is still in this world, while his confession can be admitted, while the satisfaction and remission effected through the priest is pleasing with the Lord. Let us turn to the Lord with our whole mind, and, expressing repentance for our sin with true grief, let us implore God’s mercy Let the soul prostrate itself before him; let sorrow give satisfaction to him; let our every hope rest on him. He himself tells how we ought to ask. He says, “Return to me with all your hearts, in fasting and in weeping, and in mourning, and rend your hearts, not your garments.” Let us return to the Lord with a whole heart; let us placate his wrath and displeasure by fastings, weepings and mournings, as he himself admonishes.
Cyprian “The Lapsed 29.5” ACCS