Those who associate [others with God] say, "If God had so willed we would not have worshipped anything besides Him, neither we nor our fathers, nor would we have forbidden anything without His sanction." So did those who went before them. The duty of the messengers is only to convey the message clearly. 35 For We assuredly sent amongst every People a messenger, (with the Command), "Serve Allah, and eschew Evil": of the People were some whom Allah guided, and some on whom error became inevitably (established). So travel through the earth, and see what was the end of those who denied (the Truth). 36 (Muhammad), even though you have a strong desire to guide them, be sure that God will not guide those who have gone astray and no one will be able to help them. 37 And they swear by God the most solemn of oaths that God would not raise him who dieth. Yea! it is a promise on Him incumbent but most of mankind know not. 38 (That is bound to happen in order that) He may make clear to them the reality regarding the matters on which they differ and that the unbelievers may realize that they were liars. 39 Our word for a thing when We intend it, is only that We say to it, Be, and it is. 40