It seems like whenever one tries to provide evidence of God, the Bible, ect. to an atheist they keep changing the goalposts.
One example is the simple fact of Jesus being a historical person.
You give them the Gospels as proof and that isn't good enough because it was written by Christians and therefore biased. You give them secular sources close to the time of Christ and those aren't good enough because they've been tainted by Christians. You give them other secular sources and they don't count because they came too late.
Atheists think they're governed by logic and science and have an incorruptible, rational view of everything. There's a least one fallacy they keep coming back to and it's changing the goalposts.
I'd argue that it's not a changing/moving of the goalposts.
It's a disagreement over what the original goalposts are/were whether or not the information presented as evidence has cleared the original goalposts.
In this particular instance, in the aspect of whether or not Jesus was a real person who existed isn't at the core of the debate.
To use a more basic non-religious example:
Joe claims that his friend bought a Ferrari
Mike says "I don't know if I believe that, from everything I've observed thus far in life, an accountant for a small firm doesn't make enough money to buy a Ferrari, do you have proof of that? I'll need to see something concrete before I'd believe it"
If Joe's supporting evidence is:
His other friend Matt says he saw him at the dealership one day browsing
His other friend Markus texted me saying he thinks he saw him in a Ferrari
The guy Lucas we know recalls hearing other people saying something about him owning one
And a mutual friend Jonathan told us that he remembers hearing him say he wanted to buy one
"Joe, did any of you actually see it?"
- "No Mike, but the text messages and emails seemed fairly detailed"
The core of the debate/dispute isn't what the whether or not he was ever spotted at a the car dealership, or what his four friends heard about or think they might have seen or any documented text messages between them. All of those things could be 100% true without proving the original assertion which is "Did he actually buy a Ferrari"
Or for the reader's digest version: Proving extraneous aspects & minutia that aren't central to the core claim in dispute isn't satisfying the original demand for hard evidence, so people rejecting/questioning those as evidence and still requesting something more concrete isn't shifting the goalposts, it's a clarification of what the original goalposts are.