Psalms 77:17-21

The clouds poured out water: the skies sent out a sound: thine arrows also went abroad.

The voice of thy thunder was in the heaven: the lightnings lightened the world: the earth trembled and shook.

Thy way is in the sea, and thy path in the great waters, and thy footsteps are not known.

Thou leddest thy people like a flock by the hand of Moses and Aaron.