Have you people not been informed of what became of your predecessors: the people of Nuh (Noah) and those of 'Ad and the people of Thamud and their successors whom no one knows but Allah! Their Messengers brought them clear and plain revelations guiding out of darkness and superstitions of later times and out of want of spiritual and intellectual sight into illumination and enlightenment but they drew their hands across their lips to menace with their mouths their refusal to accept the divine message and said: "We flatly deny the truth of your mission and we are in doubt of the system of faith which you invite us to follow. It excites suspicion."