For the most part it helps, but your lack of interest in the other Books seems backwards. You want to learn about your God, and yet these accounts are somewhat ignored. Who is it that decided their historical validity is far less certain?
I could go into a spiel about the
cannon canon and how it got made and process of textual criticism, but that really isn't what convinces me. This is stepping further out from plain logic than most of my previous statements and fits more closely into the "I choose to believe this" category:
If god wanted us to know about Him, he'd have to tell us somehow. And if he wanted to tell us, the only logical way would be to leave a book, something that is external to any single human mind against which we can measure our ideas about Him and do research, should we be so inclined. If God really wants to talk to us, then something like a Bible is necessary, and so God would make sure that a book was preserved. (Why not give everybody a personal revelation? Well, then we'd just be arguing about whose revelation was better than whose and people could lie about they'd had revealed, and it really wouldn't be any better than if there were no revelations at all.)
Which book? Why not the Koran? (I'm not finished reading the Koran yet, but I'll get there eventually.) I'm trying to concise, so I'll just say that in reading the Bible, you see a number of unique qualities not present in any other book that I'm aware of.
High among these is the fact that all of its characters (with the exception of Jesus) are flawed, usually very flawed. Bible "heroes" are seldom heroic: They actually spend a lot of their time sort of bumbling around, screwing things up, and not one gets everything right. No one was writing this for their own glory or benefit. In contrast to the Koran, in which I've read passages that are very pro-Muhammad, the Bible is very seldom nice to the people about whom it is written. One of the key points of the Bible, Old and New Testaments both, is that it cuts down the people (like me) who claim to follow it: It calls us all sinners and tells us not to be proud of ourselves. That's not what you'd expect from self-serving human propoganda.
Most of you haven't read the Bible much, I gather, but, from my perspective, the message of the Bible is radical. It turns the world on its head: The greatest is the least. The strong serve the weak. The whore is more righteous than the cleric. The Bible says things that are totally out-there in comparrison to anything else I know about, but all that crazy out-there stuff makes total sense, once you really start to understand what it's saying. Lots of things seem plausible until you get into them. The Bible is the opposite: It seems crazy until you read into it, and then it makes sense.
Again, I'm trying to be concise, so sorry if it sounds like a cop-out, but I don't see, really, what else the Bible could be but a message from God. It is, at least, something very unique, and if you put on your sci-fi hats and think about what a message from God would be like, it would have to be something like this. Although there is historical evidence that the Bible is at least as accurate as any other ancient writings, the qualities of the book itself do more to convince me of its authenticity than does that evidence.