Faith Alone: The Doctrine on Which the Church Stands or Falls (Philippians 3; Luke 18)

Does the official teaching of the Roman Catholic Church affirm the true gospel? Well, this is the last of three messages on the Reformation as we celebrate 500 years. Martin Luther called justification by faith alone "the article on which the church stands or falls." Was he correct? Is this teaching biblical? Did Jesus teach this as well as Paul? What does Jesus say we lose if we reject this doctrine?