I have found no good reason to believe it is, and I tried exceedingly hard to believe when I was a Witness. In fact, the main reason I left the organization was because I felt that belief in the Bible (at least in the manner required by the WTS) was intellectually dishonest.
The main reasons I felt that I could not honestly believe in the Bible is because it simply does not reconcile with science and history in many respects. But I certainly agree with what Bubbamar wrote above. If God really did communicate with humans, and if God were a loving God, wouldn't we expect to have a book that painted a picture of really great, warm, loving person? And for God's sake, shouldn't it make sense? Why all the riddles? Why all the double-speak, contradiction, and just plain gibberish? When I was a Witness I felt like I was constantly making excuses for God. "Well, yeah, that seems kind of rough, but, see, God had to do that because...." Like when Moses has to talk God out of destroying Israel at Mount Sinai. Or how about the wholesale destruction of entire cities and nations? "Well, God gave the Canaanites 400 years to repent." Nevermind the fact that - even if individuals did receive clear indication of exactly what the requirements for life were - which I don't think anyone can demonstrate that the Bible portrays - there were still innocent children mercilessly crushed by the invading Israelites whose eyes were not to feel sorry for "old man or virgin."
What actual book from God would require so much defending of the description that God himself supposedly wrote? Couldn't God paint a flattering picture of himself?
I mean, really. When you're honest, you have to agree that you really have to search to find scriptures where God seems nice. If God's such a great guy and he did inspire the Bible, shouldn't you be able to just flip it open and feel the love flow? I actually find the Bible to be incredible in that, it seems as though collecting writings together at random, you'd stand a better chance of getting something from which you'd be able to wring some good, loving quotes. We've got 1500 pages of 6-point type, and the "God is a Nice Guy" collection amounts to a very small Greatest Hits album of like 25 scriptures.
So my conclusion is that, either God did inspire the Bible and he happens to be schizophrenic with a decidedly angry streak and a penchant for arbitrarily punishing humans and livestock, or that the Bible was written by people bent on controlling their fellowmen by claiming to be the divine channel. Seeing that the Bible has consistently been used the the latter, I find it quite probable that that was the original purpose as well.
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