Jesus told you, they go into great detail about what they've seen, puffed up by their unspiritual minds. Enoch says he saw what?
Ever heard of Enochian magic? Why do you think it's called that?
As for why we're "allowed" to have the bible. They don't understand what it says, so no reason to ban it.
>Mark 4:11-12 KJV
>11 And he said unto them, Unto you it is given to know the mystery of the kingdom of God: but unto them that are without, all these things are done in parables:
>12 That seeing they may see, and not perceive; and hearing they may hear, and not understand; lest at any time they should be converted, and their sins should be forgiven them.