Has it not, then, become plain to those who have inherited the earth in the wake of the former generations that, had We so willed, We could have afflicted them for their sins, (they, however, are heedless to basic facts and so) We seal their hearts so that they hear nothing. 100 To those [earlier] communities - some of whose stories We relate to you - there had indeed come Messengers with clear proofs, but they would not believe what they had once rejected as false. Thus it is that Allah seals the hearts of those who deny the truth. 101 And We found no covenant in most of them; and most of them We found ungodly. 102 Then We sent after them Moses with Our signs to Pharaoh and his establishment, but they were unjust toward them. So see how was the end of the corrupters. 103 And Moses said: 'O 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 He answered: 'If you have come with a sign, show it to us if you are of the truthful' 106 Then (Moses) threw his rod, and behold! it was a serpent, plain (for all to see)! 107 Then he drew out his hand, and it appeared luminous to all beholders. 108