3.  Ephesians 3:3-6

3 the mystery was made known to me by revelation, as I wrote above in a few words, 4 a reading of which will enable you to perceive my understanding of the mystery of Christ. 

5 In former generations this mystery was not made known to humankind, as it has now been revealed to his holy apostles and prophets by the Spirit: 6 that is, the Gentiles have become fellow heirs, members of the same body, and sharers in the promise in Christ Jesus through the gospel.

                The Holy Spirit is a Person, not just an active force, who reveals truth and the mystery of Christ.  People reveal truths or concepts to other people.  The Holy Spirit is a Person who speaks real words, ideas, concepts, and truths, and He revealed the mystery of Christ to the apostles and prophets.

                The mystery of Christ is not contrary to reason, but above reason.  The mystery cannot be discovered by reason alone, but the mystery must be revealed.  The mystery may not be fully understood by our reason alone, but the mystery can be accepted and over time the mystery will be more fully understood.  Let's not denigrate the fact that there is mystery in the Christian faith that the Holy Spirit can reveal and help us understand.

                The Holy Spirit revealed these truths to the holy apostles and prophets, including the Apostle Paul.  Then, they revealed these truths to believers.  These truths were written in the Bible for us today in words the Holy Spirit inspired, so the Bible is without error in all that it affirms.

                We need to pray to the Holy Spirit and ask Him to help us understand the Bible, and He will make the mysteries of God better known to us.  Do not discard something because it is a mystery or not fully understood.