Like cooking, preaching can become bland. It can fail to have that freshness worthy of the gospel table. There are many reasons why. One could identify a lack of preparation, lack of understanding, poor delivery, and shallowness. We would not disagree that under-cooking the homiletical meal is a problem. But there is something else that can make preaching bland: the deadly reality of not being personally wowed by the subject.
(Erik Redmond: The Missing Ingredient in Many Sermons)