Has it, then, not become obvious unto those who have inherited the earth in the wake of former generations that, if We so willed, We could smite them [too] by means of their sins, sealing their hearts so that they cannot hear [the truth]? 100 Unto those [earlier] communities - some of whose stories We [now] relate unto thee - there had indeed come apostles of their own with all evidence of the truth; but they would not believe in anything to which they had once given the lie: thus it is that God seals the hearts of those who deny the truth; 101 We did not find many among them keeping their promises. However, We did find many evil-doers among them. 102 After those We sent forth Moses with Our signs to Pharaoh and his nobles, but they dealt with Our signs unjustly. Observe, then, what happened to the mischief-makers. 103 Moses said, "Pharaoh, I am a messenger from the Lord of the Universe, 104 And it behoves me to say nothing about Allah except what is true. I have come to you with a clear sign of having been sent from your Lord. So let the Children of Israel go with me.' 105 Pharaoh said: if you have brought a sign, then bring it forth if you are truthful.' 106 So Moses threw his staff, and suddenly it was a serpent, manifest. 107 Then he drew out his hand, and it appeared luminous to all beholders. 108