After more than a century of debate about the significance of imperial cults for the interpretation of Revelation, this is the first study to examine both the archaeological evidence and the Biblical text in depth. Friesen argues that a detailed analysis of imperial cults as they were practised in the first century CE in the region where John was active allows us to understand John's criticism of his society's dominant values. He demonstrates the importance of imperial cults for society at the time when Revelation was written, and shows the ways in which John refuted imperial cosmology.