Then the bible isn't written first hand. Its written second hand. As you just claimed. Not only that, there is no historical evidence outside of claims in the bible, of who actually wrote many of the books of the bible. There are portions that are confirmed as having the author claimed, but there's more mystery than fact. Every account of Jesus that is used as credit for his existence, is credited to heresay from people who lived long after the time of Jesus. Also there is no mention of jesus in the well documented execution records of the time of Pontius Pilate the roman ruler who supposedly killed put him on the cross. So taking the bible as a evidence, is questionable at best.