But [let them always remember that] if We lengthen a human being's days, We also cause him to decline in his powers [when he grows old]: will they not, then, use their reason? 68 We did not teach him (Muhammad) poetry, nor was he supposed to be a poet. It is only the word (of God) and the illustrious Quran 69 by which he may warn those who are living and may let the words of God come true against the unbelievers. 70 Have they not seen how that We have created for them of that Our hands wrought cattle that they own? 71 And that We have subjected them to their (use)? of them some do carry them and some they eat: 72 They derive a variety of benefits and drinks from them. Will they, then, not give thanks? 73 And they have taken gods besides Allah that they may be helped. 74 They (the appointed Gods) cannot help them; and they and their armies will come (to Us), as captives. 75 So do not let their saying grieve thee; assuredly We know what they keep secret and what they publish. 76 Does not man see that We have created him from Nutfah (mixed male and female discharge semen drops). Yet behold! He (stands forth) as an open opponent. 77 And he strikes out a likeness for Us and forgets his own creation. Says he: Who will give life to the bones when they are rotten? 78 Say thou: He shall quicken them Who brought them forth for the first time, and He is of every kind of creation the Knower! 79 He has created fire for you out of the green tree from which you can kindle other fires. 80 Is not He who created the heavens and the earth able to create the like of these? Yea! He is the Supreme Creator, the Knower. 81 Whenever He decides to create something He has only to say, "Exist," and it comes into existence. 82 Exaltations to Him in whose Hand is the Kingdom of all things, and to Him you will be returned. 83