Verily, in the creation of the heavens and the earth, and the alternation of night and day, and in the ship that runneth in the sea with that which profits man, and in what water God sends down from heaven and quickens therewith the earth after its death, and spreads abroad therein all kinds of cattle, and in the shifting of the winds, and in the clouds that are pressed into service betwixt heaven and earth, are signs to people who can understand.