Leon van den Broeke is Associate professor Church Polity and Director of the Deddens Church Polity Centre at the Theologische Universiteit Kampen; Associate professor Religion, Law and Society and Chair of the Centre for Religion and Law at the Vrije Universiteit Amsterdam.Allan J. Janssen (1948-2020) was Affiliate professor emeritus of Theological Studies, New Brunswick Theological Seminary and General Synod Professor emeritus of the Reformed Church in America.