Assuredly in the creation of the Heavens and of the Earth; and in the alternation of night and day; and in the ships which pass through the sea with what is useful to man; and in the rain which God sendeth down from Heaven, giving life by it to the earth after its death, and by scattering over it all kinds of cattle; and in the change of the winds, and in the clouds that are made to do service between the Heaven and the Earth; - are signs for those who understand.