It makes sense that a perfect orderly God, that created man with a body, soul and spirit and has a plan and purpose for him, would communicate that plan to him. It is also logical that to keep His single orderly plan precisely communicated to all men throughout the centuries it would have to be well documented. The imperfect mind of man is too full of feelings, vain imaginations and environmental influences to accurately verbally transmit God's instructions over the ages of time. Unsaved man also does not have the ability to accurately comprehend the mind of God. That is why God's instruction is documented in a book called the Bible. The Bible is the only book that is proclaimed to be authored by diety but has NO conflict with science or proven history and no internal contradictions.