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 Though you are ever so eager to guide them, Allah will not guide those who mislead (others). There shall be none to help them. 37 And they swear by Allah their strongest oaths [that] Allah will not resurrect one who dies. But yes - [it is] a true promise [binding] upon Him, but most of the people do not know. 38 so that He may make clear to them that whereon they were at variance, and that the unbelievers may know that they were truly liars. 39 Verily! Our Word unto a thing when We intend it, is only that We say unto it: "Be!" and it is. 40