"A Phrygian slave was one of the lowest known types to be found in the Roman world, displaying all the worst features of character which the servile condition developed. Onesimus had proved no exception. He ran away from his master, and, as Paul thought probable (verses 18,19), not without helping himself to a share of his master's possessions. By the help of what he had stolen, and by the cleverness which afterwards made him so helpful to Paul, he made his way to Rome, naturally drawn to the great centre, and prompted both by a desire to hide himself and by a youthful yearning to see the utmost the world could show of glory and of vice. "But whether feeling his loneliness, or wearied with a life of vice, or impoverished and reduced to want, or seized with a fear of detection, he made his way to Paul, or unbosomed himself to some Asiatic he saw on the street. And as he stepped out of the coarse debauchery and profanity of the crowded resorts of the metropolis into the room hallowed by the presence of Paul, he saw the foulness of the one life and the beauty of the other, and was persuaded to accept the gospel he had so often heard in his master's house. "How long he remained with Paul does not appear, but it was long enough to impress on the Apostle's mind that this slave was no common man. Paul had devoted and active friends by him, but this slave, trained to watch his master's wants and to execute promptly all that was entrusted to him, became almost indispensable to the Apostle. But to retain him, he feels, would be to steal him, or at any rate to deprive Philemon of the pleasure of voluntarily sending him to minister to him (verse 14). He therefore sends him back with this Letter, so exquisitely worded that it cannot but have secured the forgiveness and cordial reception of Onesimus" (Marcus Dods, D.D., _New Testament Introduction_). The Letter to the Hebrews