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 certainly We raised in every nation an apostle saying: Serve Allah and shun the Shaitan. So there were some of them whom Allah guided and there were others against whom error was due; therefore travel in the land, then see what was the end of the rejecters. 36 [Even] if you should strive for their guidance, [O Muhammad], indeed, Allah does not guide those He sends astray, and they will have no helpers. 37 They swear emphatically in the name of God that God will not raise the dead. On the contrary, it is a promise incumbent on Him, though most men do not understand, 38 For (they fear) He might make what they differed about plain to them, and that the infidels may realise that they were liars. 39 And Our word unto a thing, when We intend it, is only that We say unto it: Be! and it is. 40