Not long ago, I sat in a church service where the pastor spent nearly 20 minutes explaining everything his church wasn’t. They weren’t “religious.” They weren’t “like those megachurches.” They weren’t trying to be “seeker-sensitive” or “too political” or “too traditional.” The crowd laughed knowingly at every line. Then I realized something strange: by the end of the sermon, I still had no idea what the church was actually for. That’s become sur…