Christians: When you read the bible what convinces you that it is of divine origin?

When i read the Bible it seems very obvious to me that it is of human origin. So petty and base and violent. So concerned with superficial mundanity. In scope and content it seems palpably human rather than the work or directives of a greater being.
I don't mean that as criticism, that's just my personal experience of the Bible.

So i wonder what believers think when they read it. What makes you know that this is the word (or at least inspired word) of God?