Non-Conversational Preaching
February 21, 2009David Wells, in his barn-burning book The Courage to be Protestant:
“Preaching is not a conversation about some interesting ideas. It is not the moment in which postmoderns hear their own private message in the biblical words, one unique to each one who hears, and then go their own way. No! This is God speaking! He speaks through the stammering lips of the preacher where that preacher’s mind is on the text of Scripture and his heart is in the presence of God. God, as Luther puts it, lives in the preacher’s mouth.
This is the kind of preaching that issues a summons, which nourishes the soul, which draws the congregation into the very presence of God so that no matter what aspect of his character, his truth, his working in this world is in focus, we leave with awe, gratitude, encouragement, and sometimes a rebuke. We have been in the very presence of God! This is what great preaching always does.”
(David Wells; The Courage to be Protestant; p 230)
unashamed 
Great Wells quote. I was a student of David’s at Trinity Evangelical Divinity School the first semester after he finished his PhD at Manchester. I had primed myself to be disappointed by this young know-it-all, and he totally disarmed me within the first five minutes of the first class! (I think the accent had a lot to do with that!) And he’s only gotten better in the years since!