What Is a Gospel?

When Christians speak of "the gospels" they're usually referring to Matthew, Mark, Luke, and John. Other ancient writings about the life of Jesus are generally considered noncanonical or heretical. But what if these other gospel writings—including the Gospel of Thomas, the Gospel of Judas, and the Protevangelium of James—aren't fundamentally different from the four canonical gospels?

In this follow-up to Gospel Writing: A Canonical Perspective, noted biblical scholar Francis Watson makes th...