Ephesians 3:1-7
1 For this cause I Paul, the prisoner of Jesus Christ for you Gentiles,
2 If ye have heard of the dispensation of the grace of God which is given me to you-ward:
3 How that by revelation He made known unto me the mystery; (as I wrote afore in few words,
4 Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)
5 Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;
6 That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
7 Whereof I was made a minister, according to the gift of the grace of God given unto me by the effectual working of his power.
The Amplified Classic Version says,
Ephesians 3:1-7 AMPC
1 For this reason [[a]because I preached that you are thus built up together], I, Paul, [am] the prisoner of Jesus the Christ [b]for the sake and on behalf of you Gentiles—
2 Assuming that you have heard of the stewardship of God’s grace (His unmerited favor) that was entrusted to me [to dispense to you] for your benefit,
3 [And] that the mystery (secret) was made known to me and I was allowed to comprehend it by direct revelation, as I already briefly wrote you.
4 When you read this you can understand my insight into the mystery of Christ.
5 [This mystery] was never disclosed to human beings in past generations as it has now been revealed to His holy apostles (consecrated messengers) and prophets by the [Holy] Spirit.
6 [It is this:] that the Gentiles are now to be fellow heirs [with the Jews], members of the same body and joint partakers [sharing] in the same divine promise in Christ through [their acceptance of] the glad tidings (the Gospel).
7 Of this [Gospel] I was made a minister according to the gift of God’s free grace (undeserved favor) which was bestowed on me by the exercise (the working in all its effectiveness) of His power.