Psalms 77:15-20

15With your mighty arm you redeemed your people, the descendants of Jacob and Joseph. 16The waters saw you, God, the waters saw you and writhed; the very depths were convulsed. 17The clouds poured down water, the heavens resounded with thunder; your arrows flashed back and forth. 18Your thunder was heard in the whirlwind, your lightning lit up the world; the earth trembled and quaked. 19Your path led through the sea, your way through the mighty waters, though your footprints were not seen. 20You led your people like a flock by the hand of Moses and Aaron.