Herman J. Selderhuis is professor of church history and church polity at the Theological University Apeldoorn (Netherlands) and director of the university's Institute for Reformation Research. He is a leading Reformation historian and author of several books, including John Calvin: A Pilgrim's Life and Calvin's Theology of the Psalms. He also serves as the director of Refo500, the international platform for knowledge, expertise, ideas, products and events celebrating the 500-year legacy of the Reformation.