SAY, verily God hath caused all created things to enter beneath the shade of the tree of affirmation, except those who are endowed with the faculty of understanding. Theirs is the choice either to believe in God their Lord, and put their whole trust in Him, or to shut themselves out from Him and refuse to believe with certitude in His signs. These two groups sail upon two seas: the sea of affirmation and the sea of negation.
They that truly believe in God and in His signs, and who in every Dispensation faithfully obey that which hath been revealed in the Book--such are indeed the ones whom God hath created from the fruits of the Paradise of His good-pleasure, and who are of the blissful. But they who turn away from God and His signs in each Dispensation, those are the ones who sail upon the sea of negation.
God hath, through the potency of His behest, ordained for Himself the task of ensuring the ascendancy of the sea of affirmation and of bringing to naught the sea of negation through the power of His might. He is in truth potent over all things.
Verily it is incumbent upon you to recognize your Lord at the time of His manifestation, that haply ye may not enter into negation, and that, ere a prophet is raised by God, ye may find yourselves securely established upon the sea of affirmation. For if a prophet cometh to you from God and ye fail to walk in His Way, God will, thereupon, transform your light into fire. Take heed then that perchance ye may, through the grace of God and His signs, be enabled to redeem your souls.
XVIII, 13.