First of all, that source is not credible and gives very little dating information. Second, your position is factually inaccurate, portions of the Old Testament texts are found in old hebrew "bibles" and the Dead Sea Scrolls that date well into the 5-2nd B.C. That's a fact. I am genuinely shocked you sincerely posted that fake news revisionist history crap link in a place like this. New Testament is 10th century A.D. at best.... I suggest you research this topic further. You have a literal fuck ton of blind spots in your knowledge base.