Roman Catechism 19.68

Chapter 19 — Part II: The Sacraments — Penance

Section 68. In this matter, however, the faithful should not despair of the infinite goodness and mercy of God. For since God is most desirous of our salvation, He will not delay to pardon us. With a father's fondness, He embraces the sinner the moment he enters into himself, turns to the Lord, and, having detested all his sins, resolves that later on, as far as he is able, he will call them singly to mind and detest them. The Almighty Himself, by the mouth of His Prophet, commands us to hope, when He says: The wickedness of the wicked shall not hurt him, in what day soever he shall turn from his wickedness.