What's the best evidence for Jesus? Many Christian apologists and Jesus scholars make a case for the historical Jesus. Having read so much material over the years, this is how I approach the issue. To a great extent I'm summarizing the best arguments, as I see them. But I also have some reservations about the stereotypical apologetic. Because apologist are influenced by other apologists, and scholars read other scholars, that has a conditioning effect, which produces a stereotypical apologetic. The standard apologetic has some good elements, but the conditioning effect fosters tunnel vision, so that other lines of evidence are neglected. In addition, there are bad elements in the standard apologetic.
I. Preliminaries
1. The historical Jesus
The "historical Jesus" is often a downsized Jesus or even a naturalized Jesus. What's left over after the NT is filtered through the sieve of standard criteria. A historical reconstruction of the real Jesus, once we peel back the layers. However, the scope of my post isn't the "historical Jesus" in that residual sense, not about a reconstructed Jesus, hidden behind the NT record, but about the NT Jesus in toto.
Of course, there is a Jesus who stands behind the NT record, independent of the NT record. A Jesus who is, in a sense, bigger than the NT. But for me, the real Jesus corresponds to the NT Jesus. While Jesus is ontologically prior to the record, yet our knowledge of Jesus is epistemologically dependent on the NT record.
2. "Bias"
A stock objection to using the Gospels is the allegation that the Gospels are partisan sources since their writers are Christian. But that's a confused objection:
i) The fact that an author has a viewpoint doesn't mean he's biased. The real question is the source of his viewpoint. Suppose a kid who grew up in the tropics moves to Canada, and sees his first snowman. He excitedly tells his parents about the snowman sighting. Should his discount be reported because he's now a believer in snowmen? But his newfound belief in snowmen isn't a reflection of bias. Prior to his encounter with the snowman, he had no predisposition to believe in snowmen. Indeed, his default plausibility structure might be skeptical of reports about the existence of snowmen. His viewpoint is due to a formative experience rather than a prior belief.
ii) But even in the case of viewpoints that do reflect bias, that doesn't automatically discredit the report. I sometimes see moving objects in the sky. They may be too small or distant for me to clearly make them out. But if the motion is geometric, I assume that's an airplane, and if the motion is erratic, I assume that's a bird. My identification is "biased" because I know about planes and birds, so I use that background knowledge as an interpretive frame of reference. But my predilection doesn't discredit my observation.
iii) If traditional NT authorship is correct, then all the NT writers were converts to Christianity. Nearly all of them were Jewish converts to Christianity, while one (Luke) was a gentile convert to Christianity, although he was probably an intellectual convert to Judaism (Godfearer) prior to his Christian conversion. So all of them came to believe in Jesus.
And, once again, if traditional NT authorship is correct, then all of them came to believe in Jesus by knowing Jesus or knowing people who knew Jesus. That's not bias any more than coming to believe in something generally based on eyewitness experience or eyewitness testimony is bias.
Of course, critics who complain about the Gospels as "biased" sources usually deny that they are based on firsthand knowledge of Jesus. But that needs to be separated from the allegation of bias. Those are distinct issues.
3. Eyewitness memory
i) Another stock objection is the alleged unreliability of eyewitness memory. In particular, people remember events better than words. So how can the Gospels be an accurate record of what Jesus said?
ii) A similar objection is that the phenomenon of the omniscient narrator. Gospels writers sometimes relate incidents which they wouldn't ordinarily be privy to.
Many Christian apologists and evangelical scholars offer naturalistic explanations. And sometimes those make sense. However, treating the Gospels as naturalistic records of supernatural agents and events erects a false dichotomy. The Gospels aren't merely reports about a world containing miracles, revelations, angels and demons–detached from the world they narrate, for the Gospels are products of the same kind of world. So it's artificial to bifurcate the nature of the Gospels from the nature of the world they recount, as if the writers had to be limited to natural means of knowledge. As if fallible, unaided memory, direct observation, or informants was necessarily all they had to go by. For instance, consider Elisha's clairvoyance (2 Kgs 6). It's a philosophical and theological mistake for apologists and evangelical scholars to eliminate inspiration from consideration. Inspiration and revelation are no more or less credible than what the Gospels report.
iii) A related objection is whether "peasants" and fishermen like James, John, and Jude could write good Greek. Now, there are plausible naturalistic explanations, but over an above that, xenoglossy is a gift of the Spirit (according to Acts). So if it came to that, it would be possible for James, John, and Jude to be supernaturally enabled. For that matter, verbal inspiration might do the trick.
But supernatural explanations aren't considered, even by scholars who believe in NT miracles. It illustrates the default secular paradigm that unconsciously conditions so much NT scholarship, even among evangelicals or apologists.
For more on memory, cf. C. Keener, Christobiography (Eerdmans 2019), Part 5.
For more on memory, cf. C. Keener, Christobiography (Eerdmans 2019), Part 5.
4. Tradition
"Traditions" about Jesus uses the word "tradition" loosely and misleadingly. For instance, Eusebius has a number of historically useful anecdotes about the apostles. By the time that gets down to him, those are traditions.
By contrast, it's misleading to classify 1 Cor 15:3-8 or Heb 2:4 as "traditions". Rather, those are examples of living memory. While tradition can preserve living memory, tradition is one or more steps removed from living memory.
5. As is often noted, the documentary evidence for Jesus satisfies standard criteria like multiple attestation and the criterion of embarrassment.
