Lefty:
that's because there is no "evidence" that you have to offer which proves that the Bible is NOT the word of God.
Following your lead, then there's also no evidence that the Vedas, or the Qu' ran, or the Book of Mormon, and so on ARE NOT the Word of God either. For that matter, there's no evidence that there IS NOT an invisible pink unicorn in my closet that is channeling information from God directly to me exclusively. I'm being facetious for a reason. It's often difficult or impossible to prove a negative. And as has already been pointed out, those making assertions are responsible for backing those assertions up with evidence, and extraordinary claims require extraordinary evidence. It's not the other way around.
On the other hand, there is much evidence that the Bible borrowed, stole, adopted, and/or integrated the mythologies and religious thought of surrounding older and contemporaneous cultures --from Mithraism, Zorastrianism (paradise is originally a Persian word, not Hebrew, Aramaic, or Greek), and Egyptian, Greek and Far Eastern religous thought. At the same time, there are many believing religious scholars and clergy that have had to admit that there is little or no supporting evidence for many Bible stories (the exodus of Jews from Egypt and their wandering the desert for 40 years is one example) and much evidence to the contrary.
So where does that leave one? The possibilities are many. You can ignore the empirical evidence and take it on faith alone that the Bible is the literal truth provided by God, and condemn all those who use their God-given abilities to think and reason and who reject the Bible as literal truth. You can say the Bible is from God, but is a mixture of history, allegory and myth and reject all other claims of divine inspiration and condemn all those who believe other religous texts are from God and that yours are not, and who condemn you for your beliefs. You can say that all religious texts are from God, and that all contain truth and condemn no one. And the choices go on infinitum. I prefer to live a good life, trying not to condemn anyone for their beliefs alone, use the intelligence with which I've been blessed to learn, to think and hopefully improve, and to do my best to get along with my fellow man, and leave the judging to God if God is so inclined, because frankly I can't see the veracity of one religion's claims to represent God above all others.
CPiolo