I recently stumbled on a booklet by Al Martin, What is wrong with preaching today? at the Evangelical Library (London). It is 24 pages filled with excellency. You can get the electronic version for free at Grace Gems . Here are a few quotes that struck me from it: "All failures in preaching today are basically the failure either of the man who preaches or of the message he brings" "The soil out of which powerful preaching grows is the preacher’s own life" "The more you and I are known by our people, our influence will increase or diminish according to the tenor of our lives"