Has not the story come to you of those who were before you, of the people of Noah, and 'Ad, and Thamud, and those who came after them? none knows them save God. Apostles came unto them with manifest signs; but they thrust their hands into their mouths and said, 'Verily, we disbelieve in that which ye are sent with, and we are in hesitating doubt concerning that to which ye call us!'