Over at Marcus Borg's new Patheos blog he's asked the same question that I put to a group of Christians in my church this week. What is the gospel?
If Jesus' message is the gospel, then what did Jesus preach? What did his followers believe? Why did they follow him, even without knowing about Jesus' death and resurrection?
I think it's a challenging question for us. Our answer reveals something of our motivations and our desires. What do we want from God? Why do we follow Jesus? Would we follow Jesus based on his preaching alone?