By whom we have received grace and apostleship, for obedience to the faith among all nations, for his name:
All Commentaries on Romans 1:5 Go To Romans 1
Augustine of Hippo
AD 430
Paul preserves the main point of his case very well, so that no one would dare say that he has been led to the gospel because of the merits of his previous life. How could one claim this, when even the apostles themselves … could not have received their own apostleship unless they had first … received grace, which cleanses and justifies sinners? Rudimentary Exposition of the Epistle to the Romans