Ephesians 3:1-6

For this reason I, Paul, a prisoner of Christ Jesus on behalf of you Gentiles— ² assuming that you have heard of the stewardship of God’s grace that was given to me for you, ³ how the mystery was made known to me by revelation, as I have written briefly. ⁴ When you read this, you can perceive my insight into the mystery of Christ, ⁵ which was not made known to the sons of men in other generations as it has now been revealed to his holy apostles and prophets by the Spirit. ⁶ This mystery is that the Gentiles are fellow heirs, members of the same body, and partakers of the promise in Christ Jesus through the gospel. 

 The Holy Bible: English Standard Version. (2016). (Eph 3:1–6). Wheaton, IL: Crossway Bibles.