Who is Polemon in the book twice freed?

In the book "Twice Freed" by Patricia St. John, Polemon is a character who is a slave in ancient Ephesus. He is initially portrayed as a cruel and abusive master to the protagonist, Onesimus. However, through a series of events and interactions with Onesimus, Polemon undergoes a transformation and eventually becomes a changed man who learns the true meaning of freedom and redemption. Polemon's character arc serves as a central theme in the novel, highlighting the power of forgiveness and the potential for personal growth and change.