13:17He sends down water from the sky, and riverbeds flow according to their capacity. The current carries swelling froth. And from what they heat in fire of ornaments or utensils comes a similar froth. Thus God exemplifies truth and falsehood. As for the froth, it is swept away, but what benefits the people remains in the ground. Thus God presents the analogies.

13:31Even if there were a Quran, by which mountains could be set in motion, or by which the earth could be shattered, or by which the dead could be made to speak. In fact, every decision rests with God. Did the believers not give up and realize that had God willed, He would have guided all humanity? Disasters will continue to strike those who disbelieve, because of their deeds, or they fall near their homes, until God’s promise comes true. God never breaks a promise.