(16:37) [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. (16:38) 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. (16:39) [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. (16:40) Indeed, Our word to a thing when We intend it is but that We say to it, "Be," and it is.