Invoking Angels brings together a tightly themed collection of essays on late medieval and early modern texts concerned with the role of angels in the cosmos, focusing on angelic rituals and spiritual cosmologies. Collectively, these essays tie medieval angel magic texts more clearly to medieval religion and to the better-known author-magicians of the early modern period. In the process of rearticulating the understanding of Christian angel magic, contributors examine the places where an intersection of Christian, Jewish, and Islamic ideas can be identified.