At Jollyblogger: The Power of Spirit-Less Preaching
God may speak powerfully through someone, but the emphasis on Spirit-filled preaching in some quarters misses something important, the word itself. The example of Philippians 1 is apt. Paul rejoiced that the gospel was being preached, even if the people who were doing it were doing it to spite him (presumably because he was in prison, and thus they could have all the results while he was locked up). At the most fundamental level, God works despite the human who delivers the message, not because of what we do. Of course, we can cooperate with God's purposes by repenting and having the right motives, just as we can cooperate with his purposes by preparing carefully and thinking hard and prayerfully about what our audience needs to hear. Too often being Spirit-filled seems to have something to do with tone, volume, or how the preacher or the audience feels rather than whether God has worked in the hearts of those hearing it for genuine lifechange. That's the true indication of Spirit-filled preaching, and it may not have much to do with whether the preacher is Spirit-filled.
Update: He's got another post up now where he expands on and clarifies the point even more, starting from the way I just formulated it and offering some adjustments and caveats. I agree with pretty much all of it.
Update 2: Now he's got another post up.