How do you know the Bible is the Word of God?

I was recently listening to a Christian broadcast which was playing a few interview clips from a conservative Christian college concerning their theology on the Word of God. The simple question was, "Why do you believe the Word of God to be God's Word?" or "How do you know the Bible is the Word of God?"

The answers were very interesting. But it gave me an idea. I would like to know how you know that the Bible is the Word of God. I will post your answers on my blog. I think it would make for some great discussion and sharpening of one another. If you would like to post, click here and fire away. The question, "Why do you believe that the Bible is the Word of God?"