I find myself doubting what the Bible says quite often. Most of the time, it's when I don't read it. I figured out, though, that it's breathtakingly arrogant (a phrase I'll borrow from a good friend) to take potshots at the Bible and truth from my oft-critical high horse. Cause most of the time when I become skeptical, it's when I'm not consistently spending time with God, or reading or studying Scripture.
It's amazing, from outside the situation, it's easier to see how Christianity could be a real big crock. But when I spend time with God, it's not as easy. He seems very real. And I'm banking on the fact that he is - and that he loves me. I find myself loving Jesus, even though I'm not always sure (cerebrally) he's there.
It's like Fyodor Dostoevsky says, "If someone proved to me that Christ were outside the truth and it really were that the truth lay outside Christ, I would prefer to remain with Christ than with the truth."