1 Corinthians 2:7

But we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory (KJV)

Then: Paul explains part of the Christian World View in an age when the term didn't exist. Christians -- believers in Christ, recipients of the Holy Spirit -- have access to knowledge and understanding which others don't. The words are just a mystery to non-believers. In a way it's like reading a book filled with PC words. Until you know the double definitions, you can't understand what's really being said. In Paul's presentation, of course, it's"the mystery" which provides the extra level of ability past human knowledge which is needed to understand hidden wisdom. The Corinthians were already prepared to understand. They had the Holy Spirit within them. Paul knew they needed to keep reading to learn more about what the "book" says. That's where he's going.

Now: The mystery is just as difficult for non-believers today as it was for those in Corinth. Only when the Holy Spirit resides within one's heart can the hidden wisdom be understood. It starts with wanting to know; it starts with being willing to accept spiritual evidence, not just physical evidence; and it starts with a reaching out conversation to the Creator of the world. It continues with recognition of events as not being coincidental, or fortuitous, but answers to prayer. It expects acceptance, not denial of inspired thoughts or inexplicable "audible" words, signs or knowlege. It moves to praise and thanksgiving for the presence of one who will love, teach, guide and direct you to the Truth of God the Father, God the Son, and God the Holy Spirit throughout your life -- if you ask.