Ephesians 3:2-3, 5-6

if so be that ye have heard of the dispensation of that grace of God which was given me to you-ward; how that by revelation was made known unto me the mystery, as I wrote before in few words

which in other generations was not made known unto the sons of men, as it hath now been revealed unto his holy apostles and prophets in the Spirit; to wit, that the Gentiles are fellow-heirs, and fellow-members of the body, and fellow-partakers of the promise in Christ Jesus through the gospel