Lyle D. Bierma is P. J. Zondervan Professor of the History of Christianity at Calvin Theological Seminary in Grand Rapids, Michigan. After receiving his PhD in Religion from Duke University in 1980, he taught church history and theology at Kuyper College, Grand Rapids, Michigan, for nineteen years before joining the faculty at Calvin Seminary in 1999. His research and publications have focused on the early history of Reformed covenant theology, the Heidelberg Catechism (1563), and John Calvin. In addition to teaching, he oversees the Ph.D. program, which is designed to attract students from diverse backgrounds and to encourage students to pursue a scholarship that wrestles with the theological issues of the day. Lyle is the translator or co-translator of ten German, Dutch, and Latin books and the author of The Covenant Theology of Caspar Olevianus (1996; 2d ed., 2005), The Doctrine of the Sacraments in the Heidelberg Catechism (1999), An Introduction to the Heidelberg Catechism (2005), and The Theology of the Heidelberg Catechism: A Reformation Synthesis (2013).