Why believe the bible?

[Amarok]

Inferring from the nearly 6.8 billion people (almost 9 out of 10) who believe in the supernatural AND the 10,000 years of history where we see the same. Of course I might be wrong and it's all because of the superb evidence we are hiding from the little atheist population. 

Appealing to numbers and history does not imply we are naturally wired to believe in the supernatural nor does your second premise follow .

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It didn't spread within 20 years and even if it had that's not evidence of a real event 

Surely it spread somewhat within 20 years though within 20 years of exactly what isn't clear.

Not to the proportions he's trying to depict