Preaching is not merely an academic exercise. Of course, preaching needs to be academic- but preaching also needs to stimulate the heart as well as the mind. The purpose of preaching is both an increase of the knowledge of the Word, as well as a greater love for THE Word. As preachers apply the Word and minister to the heart- the people of God should grow, not only in their understanding of the Scriptures, but in love for the Christ of the Scriptures.
Anthony Selvaggio wrote a great article today that points to the heart of the problem: are preachers preaching to people? Check out the article here.