Philemon 1:9

As if he had said, I know indeed that I can effect it by commanding with much authority, from things which have already taken place. But because I am very solicitous about this matter, "I beseech thee." He shows both these things at once; that he has confidence in him, for he commands him; and that he is exceedingly concerned about the matter, wherefore he beseeches him. "Being such an one," he says, "as Paul the aged." Strange! how many things are here to shame him into compliance! Paul, from the quality of his person, from his age, because he was old, and from what was more just than all, because he was also "a prisoner of Jesus Christ." For who would not receive with open arms a combatant who had been crowned? Who seeing him bound for Christ's sake, would not have granted him ten thousand favors? By so many considerations having previously soothed his mind, he has not immediately introduced the name, but defers making so great a request. For you know what are the minds of masters towards slaves that have run away; and particularly when they have done this with robbery, even if they have good masters, how their anger is increased. This anger then having taken all these pains to soothe, and having first persuaded him readily to serve him in anything whatever, and having prepared his soul to all obedience, then he introduces his request, and says, "I beseech thee," and with the addition of praises, "for my son whom I have begotten in my bonds."