Jesus Wars, by Philip Jenkins, accomplished something no other book has ever done for me—it actually made the doctrinal debates of Late Antiquity interesting. An historian of religion with wide interests, Jenkins produces fascinating books on what might appear to be esoteric aspects of religious life. I remember yawning through theology classes where we learned of crusty, if utterly convicted, monks and bishops arguing over single prepositions in their efforts to define exactly who Jesus might have been. When Jenkins turns his attention to this dusty, unwashed phase of Christianity’s gamy early years, new avenues on regulated belief structures open the way to understanding just how little most believers know of their own traditions. On its way to feel-good evangelicalism, Christianity frequently paused along the way to brutally murder some of its own for disagreeing about whether Jesus shared the same essence as his dad.

Today many Christians are taught by their clergy that their faith differs little from that of the earliest Christians. All who are taught this should be compelled to read Jesus Wars in order to get a grip on what really happened. From the very beginning Christianity was deeply divided about who was truly a follower of Christ and who was not. Even within a generation of the death of Jesus his various groups of followers could find little that they all agreed upon. As Jenkins demonstrates, over the next few centuries that sad history was worked out with extreme cruelty and cudgels and swords. The side with strongest force of arms got to decide on doctrine. Nor did matters improve with the Protestant Reformation. Many Reformers lapsed into what would have found them tied to a stake for heresy, had they been fortunate enough to have been born in the early centuries of “the Christian Era.”

The one figure that seems to have been lost during the Jesus Wars was Jesus of Nazareth. Instead, human constructions of who Jesus might have been became the source of great suffering. Bishops beating bishops to death, saints having women murdered, monks forming an unwashed militia—it’s all here along with the debate over how many angels might dance on the head of a pin. Jenkins does an excellent job of demonstrating that what is now known as “orthodox” Christianity was often a matter of political accident. In the case of Theodosius II, the future of Christianity literally rode on the horse that stumbled, tossing the emperor to his death. No doubt, there will be those of one or another brand of Christianity who will see the divine will behind the ultimate outcome. That outcome, however, will always insist that all others are wrong. For those seeking a bit of balance, Jenkins will make enlightening reading. For others it may give the lie to doctrines made what they are by mere mortals. In any case, the words attributed to Jesus about loving your neighbors and enemies will nowhere be found amid the debates of who he might have really been.