Martin Luther's Large Catechism is a popular summary of basic Christian doctrine written to aid pastors and Bible study leaders in teaching. The small catechism, which was written by Martin Luther in 1529 in question and answer format, explores the Six Chief Parts of Christian Doctrine: the Ten Commandments, the Apostles Creed, the Lord s Prayer, the Sacrament of Holy Baptism, Confession, and the Sacrament of the Altar. Also included are daily prayers, a table of duties for Christians in their various callings in life, and a guide for Christians to use as they prepare to receive Holy Communion. Luther intended the catechism to be a prayer book for individuals and families and a powerful tool for the Christian life because it provides a brief, clear summary of God s Word on the essentials of the Christian faith.