Why on earth did anyone become a Christian in the first three centuries?

The consequences of becoming a Christian in the early Christian movement is set apart from that move from any other religious affiliation. You could become a Mithraist or Isiac or whatever, and it made no difference to your previous religious activities and loyalties. You continued to take part in the worship of your inherited deities of household, city, nation. But if you became a Christian you were expected to desist from worship of all other deities. And the ubiquitous place of the gods in all spheres of social and political activity made that difficult, and made for potentially serious consequences if you did desist. Indeed, it made it difficult to know how you could function socially and politically (to use our terminology). This book explores the growth of adherents to early Christianity; that all across this early period people became adherents of Christianity in the face of the costs and consequences of doing so.