Chapter 33 — Part IV: Prayer — On Prayer in General
Section 73. Implacable hatred of any person on account of injuries received we must guard against; for while we are under the influence of such feelings,- it is impossible that we should obtain from God the pardon of our sins. When you shall stand to pray, He says, forgive, if you have aught against any man; and, if you will not forgive men, neither will your heavenly Father forgive you your offences.