Colossians 1:24

Verse 24. Who now rejoice in my sufferings for you. For you as a part of the Gentile world. It was not for the Colossians alone, but he regarded himself as suffering on account of his labours in preaching to the heathen at large. His trials at Rome had come upon him because he had maintained that the wall of partition between Jews and Gentiles was broken down, and that the gospel was to be preached indiscriminately to all mankind. See this illustrated in the Introduction, & 5. And fill up that which is behind of the afflictions of Christ. That which I lack of coming up to the sufferings which Christ endured in the cause of the church.