'Depths of the Sea' in the Bible

The Lord said, I will bring again from Bashan, I will bring my people again from the depths of the sea:

Art thou not it which hath dried the sea, the waters of the great deep; that hath made the depths of the sea a way for the ransomed to pass over?

He will turn again, he will have compassion upon us; he will subdue our iniquities; and thou wilt cast all their sins into the depths of the sea.