Therefore from now on know we no man after the flesh: yea, though we have known Christ after the flesh, yet from now on know we him no more.
All Commentaries on 2 Corinthians 5:16 Go To 2 Corinthians 5
John Chrysostom
AD 407
Even if believers are still in their earthly bodies, we do not relate to them in that way, because the life according to the flesh has been transcended. We have been born again by the Spirit and have learned a different kind of behavior, which is that of heaven. It is Christ who has brought about this change. There was a time when we knew him in his earthly life, but now we know him in the perfection of his resurrection.