Perhaps because the classification of religious behaviour in the Middle Ages has not received much attention, there seems to be no scholarly consensus concerning the number or nature of its genres. This means that at present we tend to have either inadequately differentiated, broad categories of medieval religious acts, or somewhat incoherent lists of highly specific religious practices. That a good number of these religious forms pre-existed and continued long after the Christian Middle Ages is not in doubt; nor is the fact that such religious behaviours are not necessarily confined to the Christian tradition. The present discussion, however, will focus exclusively upon the Latin Christian tradition, c. 1000–c. 1500.

Surveying the expressive modes of medieval religion presents less difficulty than grouping such behaviours within larger intelligible categories. Current scholarly literature makes it clear that certain varieties of medieval religious practice are almost universally acknowledged: veneration of the saints; attendance at sermons; private prayer; participation in public, collective liturgies (for example, processions on diverse occasions); acting under the influence of prophecy; setting off on pilgrimage, whether penitential or devotional; taking the Cross; performing formal or informal acts of devotion or piety (‘devotion’ is one aspect of the medieval religious life urgently in need of sharp definition); and attempting, often through ascetic exercises, to experience God (mysticism). By no means is this an exhaustive list. The titular subject of this essay, as the reader will have noticed, does not appear in it.