Matthew Poole and continuators on Philemon 1:13

13 Whom I would have retained with me, that in thy stead, he might have ministred unto me in the bonds of the gospel .

I have such an opinion of his sincerity, that I would willingly have kept him with me that he might while I am a Prisoner for the Gospel of Christ, have done those offices for me, which thou wouldst have done, hadst thou been here.