Has it not become clear to those who inherited the earth after its [previous] people that if We willed, We could afflict them for their sins? But We seal over their hearts so they do not hear. 100 Those cities - We relate to you, [O Muhammad], some of their news. And certainly did their messengers come to them with clear proofs, but they were not to believe in that which they had denied before. Thus does Allah seal over the hearts of the disbelievers. 101 We did not find most of them true to their covenants; indeed We found most of them to be transgressors. 102 Then We sent, after them, Musa with Our signs unto Fir'awn and his chiefs, but they wronged them. Behold that wise was the end of the corrupters! 103 Moses said: 'Pharaoh, I am a Messenger from the Lord of the Worlds, 104 [Who is] obligated not to say about Allah except the truth. I have come to you with clear evidence from your Lord, so send with me the Children of Israel." 105 He said: if thou hast brought a sign, forth with it then, if thou art of the truth-tellers. 106 Therefore Moosa put down his staff – it immediately turned into a visible python. 107 and he drew forth his hand, and lo! it appeared [shining] white to the beholders. 108