John Chrysostom — on Phlm 1:10 (Homilies on Ephesians 8)

“And note, on the other hand, also Paul's fervency. He preached the gospel bound and scourged. Oh, that blessed chain, with what great effort did it labor that night, and what children did it birth! Yes, of them, too, may he say, "Whom I have begotten in my bonds." Observe how Paul glories. He will have the children born this way considered even more illustrious! Observe how transcendent is the glory of those bonds, in that they give luster not only to him that wore them but also to those who were on that occasion begotten by him.”