Of course it is: it's a work of human writing, by people who were quite serious thinkers of their era.

But you can't use the content of the bible to prove the existence of the supernatural any more than you could use Beowufl to do the same.

Agreed, I don’t think one should try to prove the supernatural starting from the Bible.

One first has to define supernatural :)

My general thought is that at the deepest possible metaphysical level, everyone has a foundational framework that realize on untestable axioms. (Eg. we have free will)

Identifying those is an interesting exercise, but then at some point I realize that at all levels of natural depth, the universe has extreme order and intelligibility. Eg. The simulation argument is a reframing of the creation arguments.

From that point, one can surmise that some creator would be intelligible, and would likely communicate with beings that have free will. Eg. humans are a cloud of hydrocarbon atoms that contemplate their own existence.

The rest then follows, and so on