Till, the story is part ripoff from the Epic of Gilgamesh. Like many "bible stories". This is because the Hebrew are a splinter of old Sumerian civilization these hand me down stories somewhat change in Torah texts and change even more in the numerous translations(Aramaic - Greek - Latin - English - etc).
Very telling is the part in the epic of Gilgamesh, in which Gilgamesh obtains a plant from the bottom of the sea.
Christianity is a piggyback of Judaism(+pagan tradition/religion), a piggyback of Hebrew tradition, a piggyback of Egyptian and Sumerian religions.
All in all, the great adaptation of ancient to modern crowd control. Personally, I do not need a fearsome story of a becoming whale shit, in order for me to act morally. I hope in the near future most people are able to obtain morality from within. Self imposed discipline and not imposed discipline. We are in this together, we are not in this for "God".