Onesimus was a runaway slave, likely having wronged Philemon deeply. Yet, Paul sees him not as a criminal, but as a transformed brother. How does the Gospel accomplish such a radical change?
The Gospel doesn't just offer forgiveness; it brings about a profound transformation. Onesimus, once 'useless' (his name literally means 'useful'), is now seen by Paul as 'profitable' – not just to Paul, but potentially to Philemon again. This change isn't superficial. It's a complete shift in identity and purpose, achieved through encountering Christ. Paul's appeal hinges on this new reality: Onesimus isn't the same person he was. His past sins are forgiven, and his future is now oriented towards usefulness and service, all because of the Gospel's power to regenerate.