On the Historicity of Jesus

This monograph presents a systematic application of Bayesian probability theory to assess whether Jesus of Nazareth existed as a historical figure. Carrier challenges the scholarly consensus by arguing that the evidence better supports the hypothesis that Christianity originated with belief in a celestial messiah figure who was later historicized into a human being. The work represents the first peer-reviewed academic book arguing for the mythicist position regarding Jesus.

Carrier divides his analysis into two competing hypotheses: minimal historicity (that an actual preacher named Jesus existed and was later mythologized) and minimal mythicism (that early Christians believed in a celestial being who was later placed in earthly history). He examines twelve key background elements and applies Bayesian reasoning to evaluate how probable each piece of evidence would be under each hypothesis. The author analyzes the Pauline epistles, arguing that Paul's references to Jesus are consistent with a celestial rather than earthly figure. He examines the Gospels as products of literary invention, drawing parallels with other ancient religious narratives and hero myths.

The work engages critically with mainstream New Testament scholarship, particularly challenging the criteria of authenticity used in historical Jesus research. Carrier contends that methodological problems plague traditional approaches, which assume historicity as a starting point rather than testing it as a hypothesis. He argues that when properly analyzed, evidence typically cited for Jesus's existence—such as Paul's reference to "James the brother of the Lord" or the Gospel narratives—is either ambiguous or better explained by the mythicist hypothesis.

The theological implications of Carrier's argument are significant, though he approaches them from a strictly historical rather than philosophical angle. By arguing that Christianity likely began without a historical founder, the work implicitly challenges fundamental assumptions about religious origins and the relationship between myth and history in religious development. While the book does not directly engage with arguments for God's existence, it represents a naturalistic approach to understanding religious origins that assumes no supernatural intervention in history.

The monograph's contribution to the God debate lies primarily in its methodological naturalism and its challenge to traditional narratives about Christianity's founding. Carrier demonstrates how Bayesian analysis can be applied to historical questions traditionally dominated by theological assumptions.