I did a quick Google search of "24,000 historical documents outside of the bible" and I think you missed a key point. Those 24,000 documents are just the number of manuscript copies of the bible. They're not historical documents relating to the bible. They ARE the bible. And that's understandable because after the bible was canonized, a massive amount of copies were ordered and distributed by the Roman Empire. But just having more copies of the bible don't make it more valid.