Lyle D. BiermaLyle D. Bierma is Professor Emeritus of the History of Christianity at Calvin Theological Seminary in Grand Rapids, Michigan (USA). He received his PhD in 1980 from Duke University in Durham, North Carolina (USA), with a dissertation on the covenan theology of Caspar Olevianus. His research interests and publications focus on early Reformed covenant theology, the Heidelberg Catechism, and John Calvin. Read More Read Less