Nicene and Post-Nicene Fathers: Series I/Volume V/Concerning Man's Perfection in Righteousness/Chapter 26
(25.) Hence the force of the statement: “There was no injustice in my hands, but my prayer was pure.” For the purity of his prayer arose from this circumstance, that it was not improper for him to ask forgiveness in prayer, when he really bestowed forgiveness himself.
- Job xvi. 18.