I suppose the Dewey Decimal System is a suitable reason to classify it as "non-fiction", but then presumably the Dewey Decimal numbers should be present (even if that is not the classification scheme of LibriVox, which is OK, I suppose).
(Anyways, the Bible is a collection of texts of various kinds. It isn't really a work of fiction in the way that most stories are, and even the texts they have are not entirely fictitious anyways; some parts might be historically accurate, some parts might be exaggerated, some parts might be lost, and some parts might be works of fiction, for example.)
The problem is that if you’re categorizing by “what fraction of people think this is true,” you have to group the Bible with Darwin and antivaxxers. You can’t decree “we’re organizing by truthfulness” unless you’re okay with other people organizing with what they think is true.
On the other hand, if you group it by topic covered and style, the Bible gets sorted with history, which isn’t great but at least is reasonable. And then there’s also the category of religion that fits even better.
Yes, the category of religion would fit better. Perhaps a categorization like: Religion > Religious texts > Bible > American Standard Version
However, some books might fit into multiple categorizations, depending on the type of categorization. (As one example, one type of categorization is Dewey Decimal System, so if you select the Dewey category then the subcategories will be the numeric categories, but the same book might also be found in other categories based on a different categorization scheme.)
1) historians/theologians reviewing a literal translation 2) believers of the faith
That said, I agree that the rest of us thinks it's a story. Maybe magical realism would be close enough?