John Gill Commentary 2 Samuel 22:16

"Then the channels of the sea appeared, The foundations of the world were laid bare, By the rebuke of Jehovah, At the blast of the breath of his nostrils." — 2 Samuel 22:16 (ASV)

And the channels of the sea appeared, the foundations of the
world were discovered, at the rebuking of the Lord, at the blast of the
breath of his nostrils.] (See Gill on Psalms 18:15).