7.143 . And when Moses came to Our appointed tryst and his Lord had spoken unto him , he said : My Lord! Show me ( Thy self ) , that I may gaze upon Thee . He said : Thou wilt not see Me , but gaze upon the mountain! If it stand still in its place , then thou wilt see Me . And when his Lord revealed ( His ) glory to the mountain He sent it crashing down . And Moses fell down senseless . And when he woke he said : Glory unto Thee! I turn unto Thee repentant , and I am the first of ( true ) believers .