'Waters' in the Bible

“But [the time is coming when] the earth shall be filledWith the knowledge of the glory of the Lord,As the waters cover the sea.

Your bow was made bare;The rods of chastisement were sworn. Selah (pause, calmly think of that).You split the earth with rivers [bringing waters to dry places].

You have trampled on the sea with Your horses,On the surge of many waters.