And We will turn away their hearts and their eyes just as they refused to believe in it [i.e., the revelation] the first time. And We will leave them in their transgression, wandering blindly. -Qur'an 6:110

And let not those who disbelieve imagine that the rein We give them bodeth good unto their souls. We only give them rein that they may grow in sinfulness. And theirs will be a shameful doom. -Quran 3:172

65 There they found a servant from among Our servants whom We had granted a mercy from Us and whom We had taught knowledge from Our Presence. 66 Moses said unto him, “Shall I follow thee, that thou mightest teach me some of that which thou hast been taught of sound judgment?” 67 He said, “Truly thou wilt not be able to bear patiently with me. 68 And how canst thou bear patiently that which thou dost not encompass in awareness?”