Whoso blinds himself to the Remembrance of the All-merciful, to him We assign a Satan for comrade; 36 and these satans hinder them from the Right Path, while he still reckons himself to be rightly-guided. 37 When such a person comes to Us, he will say [to his comrade], "If only you had been as far away from me as east is from west. What an evil comrade!" 38 They will be told on the Day of Judgment, "Regret will never be of any benefit to you. You have done injustice to your souls and you will share the torment". 39 So will you make the deaf listen or show the path to the blind, and to those who are in open error? (The disbelievers whose hearts are sealed, are deaf and blind to the truth). 40 Even if We take you away, We shall take vengeance upon them, 41 or make you see the end that We had promised them, for We have full power over them. 42 So hold fast to what has been revealed to you. Surely you are on the Straight Way. 43 The (Qur'an) is indeed the message, for thee and for thy people; and soon shall ye (all) be brought to account. 44 And ask them – did any of the Noble Messengers We sent before you, appoint any other Gods except the Most Gracious, whom they used to worship? 45