I had inquired after the questioner's worldview so I could know how to answer, since he commented on the Beggars All blog which is usually aimed at those of the Roman Catholic/Eastern Orthodox persuasions. I have extrapolated that he's not RC but more like an agnostic/naturalist. That will be fine - see? I'm not asking much. ;-)
And he agreed with me in what I was saying about worldview presuppositions, so I'm glad that's out of the way.
The infallibility of the Bible is not dependent on someone's worldview, true, but where I start to defend that idea is dependent on that person's worldview.
And he's wrong to suggest that I just "presuppose that some book from the Middle east is some got the authority of God, is the very word of God Himself, and then go from there" (sic).
I DO presuppose, however, that a theistic God exists. Why? Well, I want to be able to use logic and reason to examine the world around me, for one thing. And in particular, you're asking me to present a rational defense of the infallibility of the Bible. A naturalistic worldview can't provide the foundation for using reason to defend anythg, so I start the only place I can - theism.
Now, given theism, why is the Bible infallible? Several reasons.
1) Only 3 major theistic religions exist - Christianity, Islam, Judaism. Islam's Qur'an says the Bible is to be relied upon, so OK, I will, thanks.
Judaism and Christianity believe that God is the One Who breathed out the words of the Bible.
2) The Bible claims itself to be breathed out by God, and on theism, God is perfect and omniscient, does not make mistakes. How then could what He says be a mistake? 2 Tim 3:16-17, 2 Peter 1:20, 2 Peter 3:16, the very numerous "Thus saith the Lord"s.
(EDIT): This is why I mentioned the presuppositions first of all. We believe that God is and that He is 100% trustworthy (being the Way, the Truth, and the Life and all that), that He knows everything, and that He does not lie. How could His breathed-out Word, His communication with mankind, then, contain an error or falsehood?
3) The Bible's purpose is to reveal God, His commands, and His character and dealings with humanity.
4) Jesus Himself believed it was God talking (Matthew 22:31) and that it was the standard by which all human tradition must be judged (Mark 7:1-13).
5) Jesus Himself quoted Scripture to refute the devil (Matt 4, Luke 4).
6) The Bible contains hundreds of prophecies which have since been fulfilled, perhaps most notably in the book of Daniel.
7) The Bible accurately describes reality, including history as verified by archæological study.
8) Many of the biblical authors (especially Jesus' apostles) were in a position to know with certainty that Jesus was NOT raised from the dead, committed secret deception, or something else. Yet though they would have known their message was false (if indeed it were false), they turned back on their lifelong beliefs to cause a major disruption in their own social lives and that of their families and to risk (and eventually succumb to) an ugly death for the sake of teaching that same message that they would have known was a lie.
9) The Bible is consistent with its own thought and ideas and information on every point despite its having been written over the course of centuries by ~40 different authors.
Some of the authors were ignorant men.
Others wrote eloquent poetry and were peerless military leaders (David). Others were kings, celebrated worldwide for their wisdom (Solomon). Others were highly-educated Pharisees (Paul). Others were sophisticated advisors to kings (Isaiah and Daniel). Some were brought up as the prince of the most powerful and learned nation on earth (Moses).
Yet others were simple fishermen (Peter and John). Others were indeed goatherders from Nowhere, Israel (Amos). Others were probably-disobedient Jews (author of Esther). Some exposed ruthlessly the flaws of their nation and leaders (the author of Kings and Samuel). Others were more cheerful (the author of Chronicles). Some were traitors to the Jewish nation, converted (Matthew). It is the variety of authorship and yet the beauty of the consistency of thought that are striking.
That's a good start. If you have any questions about the details about my beliefs on the Bible, please check here first.
One more note: InvisibleDude says
I'm not questioning the RC's because I know what they'll tell me about their infallible human being of the pope, and from what I read here, that position don't look so good, so, no dude in Rome to confirm it for you, how since he's not infallible, and you're not infallible, and your list is not infallible, what makes the books themselves infallible, and how does the individual Christian know that?I agree 100% that the Roman Catholic position doesn't look very good.
No, we don't have any dude in Rome to confirm the Scripture for us. Why would we? He's the one relying on the Bible to prop up his authority claims. What then? Turn right around and claim he's the one who can tell us what the Bible is? Maybe that works for some people...
How we know this, however, deserves a little bit more fleshing out. I told you that we don't know infallibly that the Bible is infallible, nor do we know infallibly what books belong in the Bible (ie, the Canon of Scripture). But infallibility is not equivalent to a sufficient knowledge, to knowing with sufficient basis the answers to these questions. We present our arguments and examine counterarguments to that purpose.
Edit: See also Vox Veritatis on this issue.