Chapter 39 — Part IV: Prayer — The Fifth Petition: Forgive Us Our Trespasses as We Forgive Those Who Trespass Against Us
Section 20. Furthermore, in this Petition, our Lord has taught how great is the goodness and bounty of God towards mankind; for if God were not ready and prepared to pardon penitents their sins, never would He have prescribed this formula of prayer: Forgive us our trespass. Wherefore we ought to be firmly convinced, that since He commands us in this Petition to implore His paternal mercy, He will not fail to bestow it on us. For this Petition assuredly implies that God is so disposed towards us, as willingly to pardon those who are truly penitent.