Is it not a guidance to those who inherit the earth after those who inhabited it that, did We will, We would smite them because of their sins, sealing their hearts so they do not hear? 100 We have told you the stories of those towns: their messengers came to them with clear signs, but they were never going to believe in something they had already rejected. Thus God seals up the hearts of those who deny the truth. 101 We did not find most of them true to their covenants; indeed We found most of them to be transgressors. 102 After them We sent Moses with Our signs to Pharaoh and his chiefs. But they willfully rejected them. Consider the end of the evil-doers. 103 And Moses said, "O Pharaoh, I am a messenger from the Lord of the worlds 104 incumbent upon me is that I say nothing of Allah except the truth. I bring you a clear proof from your Lord. So let the Children of Israel depart with me' 105 He said: if thou hast brought a sign, forth with it then, if thou art of the truth-tellers. 106 So Moses threw down his staff and suddenly it turned into a real serpent. 107 Then he uncovered his hand and it appeared sheer white to the onlookers. 108