The level of required evidence is directly proportional to the severity of the claim. In a Small Claims Court very little evidence is required, sometimes a simple testimonial or even a hearsay is accepted as sufficient. In more serious cases the bar is raised, simple hearsay evidence is not accepted. In the most serious cases the required evidence must be “
beyond any reasonable doubt”.
How important is the claim of God’s existence? It would be more important than anything else - if it could be proven. As such one can and must demand an even higher level of evidence: “
beyond any doubt whatsoever”. Something that even the staunchest skeptic cannot explain away. Something that could be denied only at the price that one must discard one’s own sanity. And we can deny pretty much anything, except our own sanity. Even the most mentally unbalanced person is convinced that he is “sane”.
But in this case there comes a problem. I have seen and created required evidence which could not be explained unless there is some “supernatural” entity, usually called “god” or “God”. And what happened? Instead of accepting that such evidence can be created, the “other side” immediately tried to argue that such evidence would make “faith” useless, it would us allow the “know” that God exists… which is of course true. But they went one step further, and argued that such knowledge would “rob” us our “free will” to believe or not believe in God. And as such God would never allow such evidence to be created.
Because God - for his inscrutable purposes - puts a higher
value on the free will of the psychopaths and sociopaths then the bodily integrity of the victims of such psychopaths. The “free will” of the Nazis was more important than lives of the millions of Jews. The “free will” of Hutu-led government was more important than the life of the slaughtered Tutsi. The “free will” of a rapist must be “respected” over and above the gang-raped victims…
So it would be a child’s play to construct irrefutable evidence for God’s existence if only God would be willing to participate. Otherwise it is impossible. Historical “evidence”? Testimonials? Miracles? Well, maybe miracles would be sufficient, if they could be reliable. But the apologists have a “ready made” objection to that, too. “God is not a vending machine” - they say… and at the same time they submit millions of prayers asking for interventions to get a better paying job or finding their missing car keys. And when their request falls on deaf ears, they are ready with the cop-out: “it was not God’s will”. They like the game with the rule: “
if it is heads, I win, if it is tails, you lose”.