Have you journeyed to the springs of the sea or walked in the recesses of the deep?

-Job 38:16

It wasn't until the 1970's that submarines like Alvin confirmed what Job knew about over 3,400 years ago. How could Job have known there were springs in the seas? Most writings show people believed the ocean floor was a flat sandy desert, at least until submarines came along. If Job wrote this thinking it would convince people there was a God, I'd imagine talking about springs in the sea made him sound less credible not more credible to the people of his day. Either he was just guessing or perhaps he was getting divine inspiration.