Paul van Geest, S.T.L., Drs. Litt., PhD, is professor of Church History and the History of Theology at Tilburg University, head of the Centre for Patristic Studies at the University of Tilburg and the VU University Amsterdam (CPO). He has published extensively on Modern Devotion; Late Medieval Nominalism; Augustine’s theology, spirituality and reception; art of living and ethics in Early Christianity and mystagogy.Marcel Poorthuis, PhD, teaches interreligious dialogue at the Tilburg School of Theology. His dissertation dealt with the French-Jewish philosopher Immanuel Levinas. He published about Catholicism, Judaism, Buddhism and about Dutch perceptions of Islam (Van harem tot fitna, Nijmegen 2011).Els Rose, PhD, is senior lecturer Medieval Latin at Utrecht University. She received three grants in the national Innovation scheme (NWO), the first two dedicated to the relation between Christian apocryphal literature and liturgical texts in the early medieval West, the third (2017) to the development of a Christian ‘citizenship discourse’ as an expression of membership and belonging in the early Middle Ages.