Psalm 77:19 in the King James Version
Thy way is in the sea, and thy path in the great waters, and thy footsteps are not known.
Context
18 The voice of your thunder was in the whirlwind. The lightnings lit up the world. The earth trembled and shook.
19 Your way was through the sea, your paths through the great waters. Your footsteps were not known.
20 You led your people like a flock, by the hand of Moses and Aaron.