What defines a Christian? According to the Bible, a Christian is a disciple of Jesus Christ. Christians are defined by what they believe. Is There a Doctrine in the House is written to give an overview of the major doctrines of the Christian faith. Jesus calls His disciples to not only be hearers of the word, but doers of the word. Disciples make disciples. The effort that a disciple puts into learning and applying the doctrines of the Christian faith determines what kind of disciple goes out into the world. Is there a Doctrine in the House is written to challenge every Christian to know what they believe and live it out in their daily lives.