The advantage of academia is that we lay people can refer to experts in many fields of study so we don't have to. We atheists have read many books by religious apologists. We've read books by historians who have studied the history of the Bible extensively, and they explain how this in-depth research reveals about how the Bible was put together by mortals, with many flaws, mistakes, errors, and also how various interpretations have been created over thousands of years.
What is there to understand about the truth of the Bible by a believer today? Only that they believe in some sort of tradition of interpretation and meaning, not facts. The non-believe is more likely to defer to the factual history and dismiss the tradition of meaning and belief. So I argue the non-believer will more accurate in what they understand about the Bible as a text versus the believer who will make certain assumptions that not only have no facts, but are contrary to facts.