George D. Chryssides is an Honorary Research Fellow in the Department of Theology and Religious Studies at York St John University, UK. His books include The Bloomsbury Handbook to Studying Christians (Bloomsbury, 2019), Historical Dictionary of Jehovah’s Witnesses 2nd edition (2019), Jehovah’s Witnesses: Continuity and Change (2016), and The Bloomsbury Companion to New Religious Movements (Bloomsbury, 2016).