Meditate on the great teacher, the Lord. He alone knows divine things as they are. Ministers have but glimpses into the eternal world. They see but little of sin, of the shortness of time, of the depth of hell, of the love of God of the person, work, and grace of Christ. Therefore they cannot teach effectually.
Books also are infinitely imperfect.
The best of them are but sparks from the Bible, mingled with human darkness. But the Lord knows all things as they are. All things are naked and laid open to the eyes of him with whom we have to do. He knows our infinite guilt- hell and destruction are before Him. He knows the Son.