When there is a famine of the word of God in the land the spiritual nutrients that enable the eye to spot sin as sin is gone. And the spiritual protein that gives strength the moral muscle of the soul to do what is right is missing. The spiritual eye becomes diseased through malnutrition, and the clear lines between sin and righteousness begin to blur. The moral muscle of the will atrophies, and weakens, and the result is that the beckoning of the world wins because there is no strength to stand against it. When the ministry of the word goes wrong, many are caused to stumble.
John Piper