'Deep' in the Bible

The sailors were afraid, and each cried out to his god. They threw the ship’s cargo into the sea to lighten the load. Meanwhile, Jonah had gone down to the lowest part of the vessel and had stretched out and fallen into a deep sleep.

For thou hadst cast me into the deep, in the midst of the seas; and the floods compassed me about: all thy billows and thy waves passed over me.

Flood waters encompassed me, the deep surrounded me while seaweed wrapped around my head.