What I fear is that many pastors limp along with the worst form of preparation: surfing the internet for ideas which they can cut and paste into their sermons. If the pastor’s moral responsibility is good exegesis, then the pastor’s moral failure is using sources without critical evaluation or worse yet, plagiarizing sermon elements from blog posts or considering Wikipedia “sufficient preparation.” This is just as much of a moral failing as plagiarizing a paper in college or lying on a resume. My guess is that there are too many pastors who do not agree and continue reading things they got in an email that week as part of their sermons.
Another factor is reliance on topical sermons rather than exegetical ones. I have commented on this before, but I am strongly in favor of expositional preaching, usually through books. Part of the reason for this is that it allows the preacher / teacher to address topics as the arise out of the text, rather than using the Bible as a proof text to support and already-assumed premise. Again, Jon was insightful in his paper: “When we are teaching our congregations topically, we tend to manipulate meanings of words and sentences to our advantage.” I am sure most pastors do not think they are “manipulating” the Bible, but it usually turns out that way when proof-texts are offered. When someone actually reads the proof-text in context and finds that it does not say what the preacher claimed, credibility is lost.
I think that more pastors need to take seriously their high-calling to present the Word of God powerfully by immersing themselves in the Scripture they intended to preach. Since we are dealing with the most precious thing imaginable, God’s Word, legitimate, quality preparation is absolutely essential.