It's nearly impossible for atheists to deny the existence of Jesus Christ and many other events of the Bible when one considers the historical evidence for these occurrences. Logically, if a few events in this collection of books can be historically supported it is possible, indeed probable, that those that cannot be corroborated did in fact happen. That is called credibility. And this credibility forces skeptics to entertain the possible validity of the entire Scriptures. For this reason, the Bible is not only important to Christians but to anyone familiar with history.
"The Bible is not just a collection of stories; it's also a historical document. We can use its depiction of history to examine whether the claims made in regard to our souls are true. If those claims are provably false, we need not worry about this subject at all. If they are true, we need to pay careful attention to what the Bible says. In other words, if the Bible is not true, then it is of zero importance. But, if the Bible is true, then it's of monumental importance. The Bible, as set forth in the New Testament, is the foundation of Christianity. To paraphrase what C.S. Lewis said, "the only thing [the Bible] cannot be is moderately important." The Bible consists of two main sections, the Old Testament (what Jews would call "the Tanakh") and the New Testament. The Christian faith utilizes both sections, but focuses primarily on the events and teachings contained in the New Testament. Throughout this book, when the term "Bible" is used, I'll be referring primarily to the 27 writings or "books" that make up the New Testament. There are several reasons for this. First, the New Testament's importance to Christianity is such that, to prove the truth of the New Testament would be to prove the truth of Christianity. The second is a matter of simplification. This book would have to be much larger if it attempted to address the veracity of the Old Testament as well, as that discussion is more complex. Finally, the New Testament is so closely related to the Old Testament in terms of laws, cultures, customs, geography, and principles, that to prove the New Testament will also give strong credence to the Old Testament, which in turn, provides the requisite context and background for the New Testament.” (excerpt from Consider the Evidence pg 4)