The problem with using the Bible to prove anything is that it's simply not evidence any more than the Hitch Hiker's Guide to the Galaxy  is evidence that Vogons exist or the Lord of the Rings is evidence of Hobbits.

So you get circular reasoning along the lines of the Bible is the word of God because it says it is, the Bible is true because it says so in the Bible.

The supernatural cannot exist because if it was manifest it could be examined, if it can be examined it is part of the natural world and so is not supernatural.