Its Preservation
Just as the modern state of Israel was emerging from thousands of years of dispersion, a bedouin shepherd discovered one of the most important archeological treasures of our time. In a cave of the northwest rim of the Dead Sea, a broken jar yielded documents that had been hidden for two millennia. Additional finds produced manuscripts that predated previous oldest copies by 1,000 years. One of the most important was a copy of Isaiah. It revealed a document that is essentially the same as the book of Isaiah that appears in our own Bibles. The Dead Sea scrolls emerged from the dust like a symbolic handshake to a nation coming home. They discredited the claims of those who believed that the original Bible had been lost to time and tampering.
 

Its Claims For Itself
It's important to know what the Bible says about itself. If the authors of Scripture had not claimed to speak for God, it would be presumptuous for us to make that claim for them. We would also have a different kind of problem. We would have a collection of unsolved mysteries, embodied in historical and ethical literature. But we would not have a book that has inspired the building of countless churches and synagogues all over the world. A Bible that did not claim to speak on behalf of God would not have become foundational to the faith of hundreds of millions of Christians and Jews (2 Peter 1:16-21). But with much supporting evidence and argument, the Bible's authors did claim to be inspired by God. Because millions have staked their present and eternal well-being on those claims, the Bible cannot be a good book if its authors consistently lied about their source of information.
 

Its Miracles
Israel's exodus from Egypt provided a historical basis for believing that God revealed Himself to Israel. If the Red Sea did not part as Moses said it did, the Old Testament loses its authority to speak on behalf of God. The New Testament is just as dependent upon miracles. If Jesus did not rise bodily from the dead, the apostle Paul admits that the Christian faith is built on a lie (1 Corinthians 15:14-17). To show its credibility, the New Testament names its witnesses, and did so within a time-frame that enabled those claims to be tested (1 Corinthians 15:1-8). Many of the witnesses ended up as martyrs, not for abstract moral or spiritual convictions but for their claim that Jesus had risen from the dead. While martyrdom is not unusual, the basis on which these people gave their lives is what's important. Many have died for what they believed to be the truth. But people do not die for what they know to be a lie.