Book excerpt: The Gospel of John and Epicureanism share vocabulary and reject the conventions of Graeco-Roman theology. Would it then have been easy for an Epicurean to become a Christian or vice-versa? Fergus J. King suggests that such claims become unlikely when detailed analyses of the two traditions are set out and compared. The first step in his examination looks at evidence for potential engagement between the two traditions historically and geographically. Both traditions address concerns about the good life, death, and the divine. However, this correspondence soon unravels as their worldviews are far from identical. Shared terms (like Saviour), their respective rituals, and teaching about community life reveal substantial differences in ethos and behaviour.