If you falter in a time of trouble, how small is your strength!

Psalm 77:16-19

16 The waters saw you, God,
 the waters saw you and writhed;
 the very depths were convulsed.
17 The clouds poured down water,
 the heavens resounded with thunder;
 your arrows flashed back and forth.
18 Your thunder was heard in the whirlwind,
 your lightning lit up the world;
 the earth trembled and quaked.
19 Your path led through the sea,
 your way through the mighty waters,
 though your footprints were not seen.