"As false teachings spread, the church was forced to define what was considered authoritative..."
Indeed. Those "teachings" turned "false" pretty quickly, didn't they?
Consider all the Gnostic and apocryphal books, and how stories about Jesus were so very quickly exaggerated into contradictory doctrine, and even sheer ridiculousness -- stories about Jesus battling dragons, or using his magic powers to kill his enemies as a child. I see these stories as no more incredible than the other stories told about Jesus, but in this case, they are stories which we both believe are total fiction. Where did those stories come from? Do you mean to tell me that first century scroll-writers would take purportedly-true written events and write fiction based on them like fan-fic? Well I never!
There were dozens of Jewish messiah claimants in that part of the world around that time (that we know about because writings about them happened to survive). That the story of a few of them would prove more popular than the rest is hardly surprising.
Nor does it seem extraordinary that one story, more popular than all the rest, might be standardized as dogma by popular religious authorities. But this agreement among cult leaders regarding which scrolls would be accepted dogma of the cult, does not serve as evidence beyond itself.
If supposedly "true" stories about Jesus were so quickly exaggerated into dragon-battling fiction within decades...
And if those supposedly "true" stories, written earlier, were written decades after the events they describe...
Written by authors you cannot even identify beyond appeals to "tradition" and "early church authority"...
How do you know that the earliest manuscripts, among those selected as canon by early religious authorities, are actually "true"? Could those canonical stories have been similarly exaggerated as those outside canon?
Ever seen a Christian "tract"? A tract is a piece of short-form literature meant to define and assert a particular view, bearing many similarities to what we understand as "propaganda". Keep in mind that "The Bible" as we understand it today, is simply a collection of religious pamphlets or "tracts", selected by committee.
Is it so unbelievable that a popular "messiah" was executed by the Romans, and his followers invented fanciful stories about him coming back to life and flying into the sky, and these stories were recorded into tracts, some of which were rejected by religious authorities as being blatant lies, but the others confirmed by religious authorities as absolute truth?
But why would you trust ancient religious authorities to tell the truth? Are there not many religious authorities who have been mistaken, or even lied?
"While the gospel of Matthew is anonymous in its content, the early church fathers were unanimous in attributing it to Matthew."
Why are you so intent to point to the "widespread" and "unanimous" agreement of the early church authorities as if it's an argument? It's not. It's irrelevant. Is it not possible for many respected men to agree and still be wrong? Is this not a common theme throughout history?
"Christianity, set in narratives of space and time, sets itself as the only verifiable religion."
That whole paragraph is ridiculous, and that's the entirety of a response I'm willing to dignify.
"You want primary sources of historical verifiability by people who weren't there but received the information second-, third- or fourth-hand."
Yeah, primary sources are nice.
That anyone would would accept fourth-hand information as true is absurdly credulous. Again, keeping the Gnostic books in mind, and how quickly stories were exaggerated in that culture, why would you believe second-hand accounts? Why believe first-hand accounts of anonymous people?
"Imagine you could travel back to Palestine in the first or second century, and you met a man there who told you about "The Messiah" named "X" who had lived decades earlier, who performed magic, healed the sick, and even came back to life..."
What if there was a burgeoning religious movement surrounding this figure, the authorities of which all agreed on a particular, standard set of scrolls to define who he was and what he did and said...
And if contemporary historians confirmed this by including short references to this person and his followers who call themselves "X"ians...
Is any of this compelling evidence to believe that this fantastic story is true?
"None were eye-witnesses, because the writers who were eyewitnesses were published in the Bible, but you won't accept those."
I'm talking about the story of Jesus. You just got finished admitting that the authors of three of the four Gospels were anonymous, and Mark was verified as the author according to "tradition". How do you know any of them were eyewitnesses to the events they wrote?
How can you confirm the validity of a written document when you don't even know for sure who wrote it?