So I need some thoughts and opinions. Somebody wrote me with several questions, but the crux seems to along the lines of Can we offer proof that Scripture is inspired? This person had been a Christian for many, many years but due to some sort of personal crisis mishandled by the church, began to doubt the veracity of Christian life and belief. After years as a skeptic, having turned away from Christianity, this person finds difficult to completely do away with belief in Jesus ("So hear I am, after a few years of wanting to shun God, still unable to let him go – or maybe it’s Him who won’t let me go"). Of the several questions earnestly asked of me, "Why trust the Bible?" is at the top of the list. Below is part of my tentative answer to him. So.... what think thee? Any advice? Anything I missed or am dead wrong on?
It seems like the latter two of your three questions hinge upon the first, the question of revelation, so it may be best to talk about that first. Is Scripture the divinely inspired work that Christianity maintains it to be? Can it be proved so? I think the answers to these questions are Yes and No, respectively; yes, Scripture is divinely inspired, and no, it cannot be proved to be so through any sort of brute rationality (still, though, once arrived at, I believe that maintaining trust in the Bible to be reasonable).
Let's start with simple revelation as an example - we'll even take it out of the realm of the divine. A man is driving down the highway and sees a car ahead lose control, flip, and roll onto the shoulder. The man slams on the breaks and rushes to the wreckage to see about tending to the injured. He finds the driver is beyond helping and likely only has moments left. And what's more, the driver is the president. The president, knowing his time is drawing near, looks the man in the eye and speaks his last words. Days later, after police questioning and everything, the man arranges a press conference and reports the president's last words.
Now the question is, how can anyone prove conclusively that what the man reports were actually either the president's words or that they were his last. One might look at the character of the man to determine his trustworthiness. One might compare the content of the quotation in question with past remarks verified to belong to the president. One might consult with experts on the president diction and vocabulary to ascertain to probability of him using the words and phrasing that he did. In the end though, anytime we hear report of someone having said a thing, we are essentially taking it on faith to one degree or another. Nobody has any means to actually prove that what was reported was actually said. Further, the man doesn't even have solid proof that what he reported was actually what was said. His whole report was based on a memory - a memory from a time when he was indubitably in the throes of shock and, perhaps, horror (he was, after all, witness to a gruesome accident that took the life of the nation's leader) - and we all know how fickle memories can be.
The point here is not to call into question the veracity of any and all reporting, but simply to demonstrate that proving that a report is true is impossible when one is removed by time or circumstance from the event. In the end, we might have to follow the old adage: the proof of the pudding is in the tasting. In our example, let's say the man's report of the president's last words was accurate. The words were true and yet could not be proved so. Regardless though, a president's final words aren't bound to have the kind of far-reaching effect on lives that religion can have. Whether the president really told a stranger such-and-so with his last breath is a far cry from whether Abraham really heard God tell him to sacrifice Isaac. In both cases, an outsider has no more empirical reason to believe that Abraham or the man heard what they claim to have heard - but in one case, the consequences are small, while in the other, the results would be horrifying to imagine.
So then, why do Christians believe Scripture to be God's inspired word? All the reasons and arguments people offer are nice and all, but at most they can only serve affirm that one made the right choice in believing in the veracity of Scripture. The fact that archaeological and historical sources corroborate many of the intricacies and details of Scripture doesn't prove it to be inspired. The fact that Scripture changes lives doesn't prove that it is inspired. The fact that Scripture offers a unique religious perspective never quite grasped by other popular faiths doesn't prove it is inspired. Obviously, it isn't for any of these reasons that Christians throughout centuries have staked their lives (and their deaths) on the Bible. It's really much simpler than that.
Christians believe in the Bible because they believe that the Bible is true. This sounds almost tautological, I know, but perhaps I can elucidate. Suppose that a woman attends a worship service with a friend. In hearing of the love of God, of the gospel of Christ, of her condition before God, of the Christian hope, she then comes to faith. Suppose that God, having granted her faith through his grace, which he imparted upon through her hearing of his word, changes her heart to see with a new perspective. Suppose also with this new perspective, he allows this newly converted woman to recognize him in Scripture and to cherish it as true revelation of him. In such a case, the believer believes that Scripture is inspired not because he been convinced through rigorous argumentation and fact-checking, but simply because God's Spirit causes him to believe it is worhty of trust. The fact is that it is only rarely that someone has a well-rounded understanding of Scripture's inspiration when he comes to faith. More often, a person repents in faith, embraces the Christian promise, and then turns naturally to the Scriptures for nourishment recognizing almost innately that truth lies within.
So then, if it's the Spirit that moves in conjunction with Scripture and grants one faith to believe in Scripture, then why do we occasionally lose faith in the Scriptures, becoming skeptical at the inspiration, demanding, finally, a reason to believe in them? In the end, for the same reason that even after being redeemed the believer continues to struggle with sin: he loses focus on the object of his faith. So long as one's perspective is set upon the glory of the throne of heaven, doubts and temptations are the farthest thing from thought. But when one gets distracted by the cares of the earthly, then doubts and temptations creep in. This is the Christian's earthly struggle, to be in the world yet not devoted to it.
I know that to simply say that we take this on faith is quite mystical, but really, since when has the divine conformed to the empirical? I'm not advocating the abandonment of reason, but I think that we must keep our reason in subordination to faith. If, as believers, our reason does not serve our faith, we are wasting it and using it carelessly.