There is scarcely anything so dull and meaningless as Bible doctrine taught for its own sake. Truth divorced from life is not truth in its Biblical sense, but something else and something less. Theology is a set of facts concerning God, man and the world. These facts may be, and often are, set forth as values in themselves; and there lies the snare both for the teacher and for the hearer.
The Bible is among other things a book of revealed truth. That is, certain facts are revealed that could not be discovered by the most brilliant mind. These facts are of such a nature as to be past finding out. They were 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. This lifting of the veil of unknowing from undiscoverable things we call divine revelation.
The Bible, however, is more than a volume of hitherto unknown facts about God, man and the universe. It is a book of exhortation based upon those facts. By far the greater portion of the book is devoted to an urgent effort to persuade people to alter their ways and bring their lives into harmony with the will of God as set forth in its pages.
No man is better for knowing that God in the beginning created the heavens and the earth. The devil knows that, and so did Ahab and Judas Iscariot. No man is better for knowing that God so loved the world of men that he gave his only begotten Son to die for their redemption. In hell there are millions that know that. Theological truth is useless until it is obeyed. The purpose behind all doctrine is to secure moral action.
What is generally overlooked 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. The truth is a lovely song, become sweet by long and tender association; and since it asks nothing but a few dollars, and offers good music, pleasant friendships and a comfortable sense of well-being, it meets with no resistance from the faithful. Much that passes for New Testament Christianity is little more than objective truth sweetened with song and made palatable by religious entertainment.
Probably no other portion of the Scriptures can compare with the Pauline Epistles when it comes to making artificial saints. Peter warned that the unlearned and unstable would wrest Paul’s writings to their own destruction, and we have only to visit the average Bible Conference and listen to a few lectures to know what he meant. The ominous thing is that the Pauline doctrines may be taught with complete faithfulness to the letter of the text without making the hearers one whit better. The teacher may, and often does, so teach the truth as to leave the hearers without a sense of moral obligation.
One reason for the divorce between truth and life maybe the lack of the Spirit’s illumination. Another surely is the teacher’s unwillingness to get himself into trouble. Any man with fair pulpit gifts can get on with the average congregation if he just “feeds” them and lets them alone. Give them plenty of objective truth and never hint that they are wrong and should be set right, and they will be content.
On the other hand, the man who preaches truth and applies it to the lives of his hearers will feel the nails and the thorns. He will lead a hard life, but a glorious one. May God raise up many such prophets. The church needs them badly.

(A. W. Tozer, Of God and Men)