Lesson 4Colossians 4:2-18 and Philemon 1:1-22. Paul concludes his letter to those in Colossae by mentioning a run-away slave called Onesimus, with whom Paul had shared the Gospel while in prison. The story of Onesimus and his master Philemon provides us with a fascinating illustration of how dramatically the love and grace of God is to change our own lives and relationships.