Philemon 1:8-13

Even though I have enough boldness in Christ that I could command you to do what is proper, I’d much rather make an appeal because of our friendship. So here I am, an old man, a prisoner for Christ, making my loving appeal to you. It is on behalf of my child, whose spiritual father I became while here in prison; that is, Onesimus. Formerly he was not useful or valuable to you, but now he is valuable to both of us. He is my very heart, and I’ve sent him back to you with this letter. I would have preferred to keep him at my side so that he could take your place as my helper during my imprisonment for the sake of the gospel.