The Homilies of St. John Chrysostom on the Epistle of St. Paul to Timothy
"This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief. Howbeit for this cause I obtained mercy, that in me first Jesus Christ might show forth all longsuffering, for a pattern to them which should hereafter believe on Him to life everlasting." 1 Timothy 1:15-16
The favors of God so far exceed human hope and expectation, that often they are not believed. For God has bestowed upon us such things as the mind of man never looked for, never thought of. It is for this reason that the Apostles spend much discourse in securing a belief of the gifts that are granted us of God. For as men, upon receiving some great good, ask themselves if it is not a dream, as not believing it; so it is with respect to the gifts of God. What then was it that was thought incredible? That those who were enemies, and sinners, neither justified by the law, nor by works, should immediately through faith alone be advanced to the highest favor. Upon this head accordingly Paul has discoursed at length in his Epistle to the Romans, and here again at length. "This is a faithful saying," he says, "and worthy of all acceptation, that Christ Jesus came into the world to save sinners."