Knowledge in the Mystery of Christ

Ephesians 3:1-6   

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: