The European Middle Ages are often described as an Age of Faith, dominated by a single, unified Church, and its population almost entirely Christian. But what does that mean? Is it even true? This module will look at what it meant to be Christian. We will look at the baptisms of kings and converts, at distinguishing belief and practice, at heresy and how contact with non-Christians changed what Christianity meant. Lastly, was it even possible to not believe in God in medieval Europe?