The Bible is, among other things, a book of revealed truth. That is, certain facts are revealed that could not be discovered by the brilliant mind. These facts are of such a nature as to be past finding out.
These are facts that are hidden behind a veil, and until certain men who spoke as they were moved by the Holy Ghost took away that veil no mortal man could know them.
The lifting of the veil of unknowing from undiscoverable things we call divine revelation.
What is generally overlooked among humankind is that truth as set forth in the Christian Scriptures is a moral thing; it is not addressed to the intellect only, but to the will also. It addresses itself to the total man, and its obligations cannot be discharged by grasping it mentally.
Truth engages the citadel of the human heart and is not satisfied until it has conquered everything there. The will must come forth and surrender its sword. It must stand at attention to receive orders, and those orders it must joyfully obey. Short of this any knowledge of Christian truth is inadequate and unavailing.
Bible exposition without moral application raises no opposition. It is only when the hearer is made to understand that truth is in conflict with his heart that resistance sets in. As long as people can hear orthodox truth divorced from life they will attend and support churches and institutions without objection!
(John 17:17 Sanctify them through thy truth; thy word is truth) A. W. Tozer