After the high tide of the early centuries, the ministry of catechesis diminished until the Reformation, when there was an explosion of catechism writing. T. F. Torrance edited a book that contains only catechisms that were used widely in the Reformed churches of Scotland in the 16th and 17th centuries, and he provides ten. (See The School of Faith: The Catechisms of the Reformed Church, James Clarke, 1959.) A first thought of a reader of this volume may be, "They all agree on basic doctrine---then why so many?" The...