...The absence of evidence to support the existence of something is evidence against its existence...
There's an overwhelming absence of evidence for atheism.
...that would be evidence of something according to your epistemic system.
There's a mismatch of categories there.
On the one hand we have: "Absence of evidence to support the existence of something is evidence against its
existence"
.
On the other hand we have: "Absence of evidence to support the existence of something is evidence for its
non-existence"
.
Existence and non-existence are quite different kettles of fish, with quite different bounds of required and possible evidence.
Of course, the non-existence to which I refer here, is the non-existence of something in all universes, in all planes of possibility, at this time, (if such a time concept makes sense).
Furthermore, we should add: "Absence of evidence to support the existence of something is not PROOF of its
non-existence, but rather, evidence that it probably doesn't exist".
One trite response to the claim of an absence of evidence for "God" has been; "You haven't looked everywhere!" (Meaning: 'Tada - got you!!!')
That may be the solution to the problem of evidence for "God", (that it's where we haven't yet looked).
But if there is no god, then it wouldn't matter how long or hard you looked, you wouldn't find any evidence for it, only an absence of evidence.
Furthermore, what valid evidence for the absence of "God", could one demand?
Philosophical arguments don't constitute evidence, except inasmuch as they may satisfy some people, may be internally consistent and coherent, but are still not necessarily true.
To reasonably accept something as true, it needs to be demonstrably true, not merely a good argument.
So in the absence of convincing evidence FOR "God", a reasonable person should at most be agnostic.
But theism is belief in a god, (a tautology). Atheism is a lack of a belief in a god, (also a tautology).
Agnosticism does not qualify as belief, and so a person who is agnostic cannot be qualified as theist, and by default are atheist.
The information we have about the Christian god is only available in the Bible (and associated writings)....
You mean...the EVIDENCE we have about the Christian God
That 'information' is documented and presented as historical evidence.
Of course I realise you might not believe that evidence, but some people don't believe the evidence for climate change either.
Another category error. The historical evidence which is only found delineated in the Bible, (as opposed to commentary of what is in the Bible, or what is absent from sources
other than the Bible), is nowhere near as justifiable as the evidence for climate change.
The fact that some people accept and present as historical evidence, what is in the Bible, does not necessarily mean that those people are correct.
Certainly in my opinion, what is claimed in the Bible should require a much higher standard of evidence than the evidence that Hannibal crossed the Alps on elephants.
It's not of any great relevance to our daily lives in 2016, whether or not the Hannibal escapade is true or false.
And it's not a good trait to have, (IMHO). to accept something as truth,
just because some people look down on a lack of acceptance of that as being true.
If the evidence in the Bible were so conclusive, I doubt we'd have had so much dissension, after all, don't we want to seek what is true?