Thank you h-j for the link:
What is the Gospel then? The Gospel is the only reason for hope in this world of suffering - the only answer to pain and evil. The Gospel is God in human form, Jesus Christ, sacrificing Himself to death, to cover the sins/evil/wrong-ness of His people. But Jesus did not only die for the sins of the world, God resurrected him and overcame death and evil. Followers of Jesus have peace and hope because of this, but not necessarily physical prosperity.