I can study Harry Potter as well. It wouldn't tell me anything about God though.
I can even read/study the Bible like I would read Harry Potter. It wouldn't tell me anything about God either.
The thing is, that you have to accept the Bible as God word. In other words: You have to belief in the Bible as Gods word.
If you believe the Bible is Gods word then you automaticly belief in God, because it says in the Bible that God is true.