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 These towns-- We relate to you some of their stories, and certainly their apostles came to them with clear arguments, but they would not believe in what they rejected at first; thus does Allah set a seal over the hearts of the unbelievers 101 We found no (loyalty to any) covenant in most of them. Nay, most of them We found wrong-doers. 102 Then we raised after them Musa with Our communications to Firon and his chiefs, but they disbelieved in them; consider then what was the end of the mischief makers. 103 And Musa said: O Firon! surely I am an apostle from the Lord of the worlds: 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 Thereupon Moses threw his rod, and suddenly it was a veritable serpent. 107 And he drew forth his hand (from his bosom), and lo! it was white for the beholders. 108