Philemon 1:8-11

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.