Ephesians 3:1-7
Paul's Ministry to the Gentiles
31 This is the reason that I Paul am a prisoner for Christ Jesus for the sake of you Gentiles- 2 for surely you have already heard of the commission of God's grace that was given me for you, 3 and how the mystery was made known to me by revelation, as I wrote above in a few words, 4 a reading of which will enable you to perceive my understanding of the mystery of Christ. 5 In former generations this mystery was not made known to humankind, as it has now been revealed to his holy apostles and prophets by the Spirit: 6 that is, the Gentiles have become fellow heirs, members of the same body, and sharers in the promise in Christ Jesus through the gospel. 7 Of this gospel I have become a servant according to the gift of God's grace that was given me by the working of his power.
Matthew Henry's Commentary on Ephesians 3:1-7