V. “And Forgive Us Our Trespasses, as We Forgive Those Who Trespass AGAINST US”

From The Catechism of the Catholic Church

2839
With bold confidence, we began praying to our Father. In begging him that his
name be hallowed, we were in fact asking him that we ourselves might be always
made more holy. But though we are clothed with the baptismal garment, we do not
cease to sin, to turn away from God. Now, in this new petition, we return to
him like the prodigal son and, like the tax collector, recognize that we are
sinners before him.¹³³ Our petition begins with a
“confession” of our wretchedness and his mercy. Our hope is firm
because, in his Son, “we have redemption, the forgiveness of
sins.”¹³⁴ We find the efficacious and undoubted sign of his forgiveness
in the sacraments of his Church.¹³⁵