For, no true understanding of God have they when they say, "Never has God revealed anything unto man." Say: "Who has bestowed from on high the divine writ which Moses brought unto men as a light and a guidance, [and] which you treat as [mere] leaves of paper, making a show of them the while you conceal [so] much - although you have been taught [by it] what neither you nor your forefathers had ever known?" Say: "God [has revealed that divine writ]!" - and then leave them to play at their vain talk.