Chapter 12 — Part I: The Creed — Article X: The Forgiveness of Sins
Section 8. It Is Limited As To Its Ministers And Exercise — But if we look to its ministers, or to the manner in which it is to be exercised, the extent of this divine power will not appear so great; for our Lord gave not the power of so sacred a ministry to all, but to Bishops and priests only. The same must be said regarding the manner in which this power is to be exercised; for sins can be forgiven only through the Sacraments, when duly administered. The Church has received no power otherwise to remit sin. Hence it follows that in the forgiveness of sins both priests and Sacraments are, so to speak, the instruments which Christ our Lord, the author and giver of salvation, makes use of, to accomplish in us the pardon of sin and the grace of justification.