Chapter 19 — Part II: The Sacraments — Penance
Section 149. Satisfaction Atones To The Church — Furthermore (these satisfactions) serve as testimonies of our sorrow for sin committed, and thus atone to the Church which is grievously insulted by our crimes. God, says St. Augustine, despises not a contrite and humble heart; but, as heartfelt grief is generally concealed from others, and is not manifested by words or other signs, wisely, therefore, are penitential times appointed by those who preside over the Church, in order to atone to the Church, in which sins are forgiven.