God has a record of doing things himself. He caused the floods. He created humans. He performs miracles. He tends to do things directly with his own two divine hands. Why did he tell the men what to do when writing it? Why couldn't he have written the bible himself, and given it to mortal men?

God didn't write the bible, Matthew, Mark, Luke and John did; the bible is the word of the Gospels.

I mean: has he ever told specifically YOU how great heaven is? Or even anyone you know?