About the Author

Karla Boersma is director of operations of Refo500, the international platform for knowledge, expertise, ideas, products, and events, specializing in the 500 year legacy of the 16th century reformations and program director of the Coram Deo Program. She was co-editor of the exhibition books Power of Faith â 450 Years of the Heidelberg Catechism (2013) Macht des Glaubens â 450 Jahre Heidelberger Katechismus (2013) and God, Heidelberg en Oranje, 450 jaar Heidelbergse Catechismus (2013). Other books: Calvijn en de Nederlanden (2009), Maarten Luther, Brevier, Woorden voor elke dag (2015) and Maarten Luther, Tot dienst aan God, Teksten over opvoeding en onderwijs (2016). Dr. theol. Herman J. Selderhuis is Professor of Church History at the Theological University of Apeldoorn, Director of Refo500, Scientific Curator of the Johannes a Lasco Library, and President of the International Calvin Congress.