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;
Ephesians 3:5
King James Version (public domain)
Traditionally attributed to Paul · 1st century AD · Thirteen epistles of the New Testament are traditionally attributed to him
Context
3How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
4Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)
5Which 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;
6That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
7Whereof I was made a minister, according to the gift of the grace of God given unto me by the effectual working of his power.