Elena Muñiz-Grijalvo is a Professor of Ancient History, at the Universidad Pablo de Olavide (Seville). She works on different aspects of ancient Mediterranean religions. Her publications include Himnos a Isis (Trotta 2006), Ruling the Greek World (Franz Steiner 2015), Empire and Religion: Religious Change in Greek Cities under Roman Rule (Brill 2017), and Understanding Integration in the Roman World (Brill 2023). Alberto del Campo Tejedor is Professor of Social Anthropology at the Universidad Pablo de Olavide (Seville) and author of 22 books and more than a hundred papers focused on religion, ritual, sports, symbolism, humour, and oral literature.