Say: ‘Who provides for you from the heavens, rain, and [from] the earth?’, vegetation. Say: ‘God!’ — [even] if they do not say it, there is no other [valid] answer. And indeed either we or you are — in other words [either] one of the two parties [is] — rightly guided or in manifest error. The ambiguity here [concerning which of the two is rightly guided] is intended as a gentle invitation for them to [embrace] faith if their way to it is facilitated [by God].