6:70So leave alone those who take their religion for play and pastime, and whom the worldly life has deceived. But remind with it, lest a soul becomes damned on account of what it has earned. It has no helper or intercessor besides God. Even if it offers every equivalent, none will be accepted from it. These are the ones who are delivered to perdition by their actions. They will have a drink of scalding water, and a painful punishment, because they used to disbelieve.

6:91They do not value God as He should be valued, when they say, “God did not reveal anything to any human being.” Say, “Who revealed the Scripture which Moses brought—a light and guidance for humanity?” You put it on scrolls, displaying them, yet concealing much. And you were taught what you did not know—neither you, nor your ancestors. Say, “God;” then leave them toying away in their speculation.