John receives his sixth letter; it's headed to Philadelphia. Not only is this the youngest of the seven cities, it is the weakest. Earthquakes and aftershocks and government bailouts have hurt them. Fortunately, followers of Jesus have remained true despite their vulnerability. And why? Well, because spiritual strength is less about personal and corporate power than siding with Jesus. This sermon will put you in touch with one of the bigger myths of our age: physical strength equals impact for Jesus.