Bible is the assembled of many books in different culture ,tradition and different years, different prophets and apostles with different ideas and experiences, what written in the bible is the idea and wisdom of the writers.
Christians don't generally say anything like that. Actually, you are the first I have ever heard say this. Well, of course I didn't "hear" it. I read it in your post. But if you'd rather I heard it, I could read it out loud for you.
Christians deny this because they do not want to go down in history and look at the facts. It's easier for them to simply believe in something incomprehensible that they just do not bother searching for the truth.