"The natural man receiveth not the things of the Spirit of God ... because they are spiritually discerned" (1 Corinthians 2:14)
When the Spirit illuminates the heart, then a part of the man sees which never saw before; a part of him knows which never knew before, and that with a kind of knowing which the most acute thinker cannot imitate. He knows now in a deep and authoritative way, and what he knows needs no reasoned proof. His experience of knowing is above reason, immediate, perfectly convincing and inwardly satisfying.
"A man can receive nothing." That is the burden of the Bible. Whatever men may think of human reason, God takes a low view of it.
The inability of human reason as an organ of divine knowledge arises not from its own weakness but from its unfittedness for the task by its own nature. It was not given as an organ by which to know God.
It takes the Holy Spirit to unlock the Book. He who reads simply with the eye of the intellect will miss the glory of the Book, and never realize the soul food with which it is stored. It is well to ask the light and blessing of the Holy Spirit upon us each time that we read.
~A. W. Tozer~