Preaching has had a bad name in Christian circles
almost from apostolic times. There are a number of reasons for this. The
basic one is that God and the things of God are ineffable; therefore, when
words about the divine are multiplied they attempt to do the impossible.
More practically, preachers have numerous faults that can make the word of
God unpalatable. They depart from the biblical word and deliver a merely
human word; they do not sufficiently prepare what they mean to say; they
deal in cliches, thereby rendering their remarks predictable and otiose;
they preach too long. The latter is not a chronological judgment so much as
the perceived disproportion between the number of words spoken and the ideas
-- Gerard S. Sloyan in, The Collegeville Pastoral
Dictionary of Biblical Theology.