The document discusses two different gospels or messages that are proclaimed within Christianity. The first gospel focuses on how to get to heaven after death by believing the right things. The second gospel, which the author argues is the true gospel of Jesus, is about the kingdom of God and transforming lives and the world through following Jesus' example and teachings. It involves learning to live as disciples of Christ by embracing a radical new way of life centered around love, service, and God's will on earth. The kingdom of God calls Christians to holistically transform themselves and society rather than just saving souls for heaven.