(Muhammad), ask them, "Who gives you sustenance from the heavens and earth, who truly possesses (your) hearing and seeing abilities, who brings the living out of the dead and the dead out of the living and who regulates (the whole Universe)? They will reply, "God." Ask them, "Why, then, do you not have fear of Him?" 31 That then is God, your Lord, the True; what is there, after truth, but error? Then how are you turned about? 32 Thus is the Word of thy Lord justified concerning those who do wrong: that they believe not. 33 Say, "Are there of your 'partners' any who begins creation and then repeats it?" Say, "Allah begins creation and then repeats it, so how are you deluded?" 34 Say: 'Is there any of your associates who guides to the truth?' Say: 'God -- He guides to the truth; and which is worthier to be followed -- He who guides to the truth, or he who guides not unless he is guided? What then ails you, how you judge?' 35 Most of them only follow conjectures; and surely conjecture can be no substitute for truth. Allah is well aware of whatever they do. 36 This Quran is not such as could have been produced by anyone but God. It fulfills that [the predictions] which came before it and gives a fuller explanation of the [earlier] Revelations. There is no doubt about it: it is from the Lord of the Universe. 37 Do they say that Muhammad has invented it? (Muhammad), tell them, "If your claim is true, compose only one chapter like it and call on anyone besides God for help. 38 In fact they arbitrarily rejected as false whatever they failed to comprehend and whose final sequel was not apparent to them. Likewise had their predecessors rejected the truth, declaring it falsehood. Do observe, then, what was the end of the wrong-doers. 39 And of them is he who believes in it, and of them is he who does not believe in it, and your Lord best knows the mischief-makers. 40