"Some pastors who preach through books make the mistake of loading their messages with irrelevant details about the background of the passage or the technicalities of the biblical language. This turns the sermon into a dry commentary on the text rather than a living and dynamic explanation and application of the Scripture. Such preaching is monotonous and hard to get used to. In fact, no pastor should force his congregation to become accustomed to such boring preaching."
Stephen Rummage, Planning Your Preaching, p. 78