Frederick Buechner:

    The Preacher
    "But let him take heart.  He is called not to be an actor, a magician, in the pulpit.  He is called to be himself.  He is called to tell the truth as he has experienced it.  He is called to be human, and that is calling enough for any man.  If he does not make real to them the human experience of what it is to cry into the storm and receive no answer, to be sick at heart and find no healing, then he becomes the only one there who seems not to have had that experience because most surely under their bonnets and shawls and jackets, under their afros and ponytails, all the others have had it whether they talk of it or not.  As much as anything else, it is their experience of the absence of God that has brought them there in search of His presence, and if the preacher does not speak of that and to that, then he becomes like the captain of a ship who is the only one aboard who either does not know that the waves are twenty five feet high and the decks awash or will not face up to it so that anything else he tries to say by way of hope and comfort and empowering becomes suspect on the basis of that one crucial ignorance or disingenousness or cowardice or reluctance to speak in love any truth but the ones that people love to hear."

From: "Telling the Truth; The Gospel as Tragedy, Comedy & Fairy Tale."