Roman Catechism 12.10

Chapter 12 — Part I: The Creed — Article X: The Forgiveness of Sins

Section 10. Sin Can Be Forgiven Only By The Power Of God — This is manifestly an effect of the infinite power of God, of that same power which we believe to have been necessary to raise the dead to life and to summon creation into existence. But if it be true, as the authority of St. Augustine assures us it is, that to recall a sinner from the state of sin to that of righteousness is even a greater work than to create the heavens and the earth from nothing, though their creation can be no other than the effect of infinite power, it follows that we have still stronger reason to consider the remission of sins as an effect proceeding from the exercise of this same infinite power.