Onesimus is a runaway slave. Paul writes to Philemon, the master of Onesimus, to encourage him to forgive Onesimus and to receive him back as a brother.
BibleGateway: Philemon ESV Text: Philemon Philemon (Listen) Greeting 1:1 Paul, a prisoner for Christ Jesus, and Timothy our brother, To Philemon our beloved fellow worker 2 and Apphia our sister and Archippus our fellow soldier, and the… Onesimus is a runaway slave. Paul writes to Philemon, the master of Onesimus, to encourage him to forgive Onesimus and to receive him back as a brother.