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 And We certainly sent into every nation a messenger, [saying], "Worship Allah and avoid Taghut." And among them were those whom Allah guided, and among them were those upon whom error was [deservedly] decreed. So proceed through the earth and observe how was the end of the deniers. 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 Allah their strongest oaths, that Allah will not raise up him who dies. Yes, (He will raise them up), a promise (binding) upon Him in truth, but most of mankind know not. 38 [It is] so He will make clear to them [the truth of] that wherein they differ and so those who have disbelieved may know that they were liars. 39 Indeed, Our word to a thing when We intend it is but that We say to it, "Be," and it is. 40