Chapter 19 — Part II: The Sacraments — Penance
Section 75. Forgiveness Of Injuries — Again, not less necessary for contrition than the other chief conditions is a care that it be accompanied by entire forgiveness of the injuries which we may have received from others. This our Lord and Saviour admonishes when He declares: If you will forgive men their offences, your heavenly Father will forgive you also your offences, but if you will not forgive men, neither will your Father forgive you your offences.