OK, then. But you do have an obligation to advance at least a provisional explanation, otherwise the 'where is the evidence?' routine is just obnoxious. If you personally feel that no explanation can be extracted at all from the messy texts, then all you're doing is barracking from the sidelines.
No, you are unconvinced by the interpretation placed on the NT and other sources and do not think those interpretations constitute evidence of a historical Jesus. Which is fine. But this still leaves the problem of explaining the sources unsolved. The NT is evidence for something.
Actually, yes, you do have an obligation to explain the NT and other sources in some coherent manner. Failure to do this doesn't make the Christian religion true nor does it mean that the historicity of Jesus is certain beyond all reasonable doubt.
But failure to explain the sources does mean you have nothing to add to a perfectly worthwhile historical research question, namely how Christianity arose. That is the secular issue at stake here.
Then such biblical writings are evidence for something else; you've not explained what they're evidence for. Constantly relying on 'not' and presenting a series of negations is pretty lame. The texts exist; explain them.
So at what point in the history of the early church are we on 'secure' ground, then?
So how then does a secular historian backtrack from the moment of 'secure' knowledge to explore the origins of one of the most important religions in world history?
It strikes me that historians seeking to reconstruct the origins of Christianity are going to have to rely on the NT and related early texts just as much as they have to rely on the patristic writings and the not terribly reliable Eusebius.
Why is it a problem? All of the surviving sources talk incessantly about a figure named Jesus. They believe in this person's historicity. We are not in a position to travel back in time to disabuse them of this belief; that belief is fully historical.
We cannot verify the existence of the person they so fervently believed in, using external independent corroborative evidence, but nor can we point to external independent evidence that disproves his existence. Measured by the standards of evidence we expect for more contemporary eras, the entire question is uncertain.
It's ironic, you keep going on about 'credible evidence' but the evidence we do have is all about the beliefs in Jesus circulating among early Christians, who proceeded to write down what they thought about him in all their contradictory, messy, polemical, theologically inclined glory.
This situation doesn't bother me, because I don't realistically expect 'hard evidence' here, but it seems to wind you up endlessly.
Instead of droning on about "credible evidence", how about you just accept that what the NT etc offer is evidence of belief. Perfectly credible evidence of belief, in historical terms.
Since I haven't referenced Ehrman's Did Jesus Exist?, this is irrelevant. As it happens, I don't think it's a very good book, nor do I think the question (quest) is at all certain.
Yeah, he lost me at that one, too.