Philemon 1:10 - Matthew Poole's English Annotations on the Holy Bible

I beseech thee for my son Onesimus; Onesimus, lately thy servant, (the same mentioned Colossians 4:9), but my son. Whom I have begotten in my bonds; not naturally, but spiritually, to whom I have been a spiritual father, and begotten him to Christ in my old age, and while I have been here suffering as a prisoner.