Not now as a servant, but above a servant, a brother beloved, especially to me, but how much more unto you, both in the flesh, and in the Lord?
All Commentaries on Philemon 1:16 Go To Philemon 1
Ambrosiaster
AD 400
Paul humbled him by saying that Onesimus was his brother both in the flesh and in the Lord, for once the issue of human subjection is removed, we are all of the same Adam and ought to recognize ourselves as brothers, particularly when faith, which takes all pride away, unites us.