There are those among them who (apparently) listen to you, but We have put coverings on their hearts, so that they do not understand, and heaviness in their ears. If they were to see all the signs, they would still not believe in them, so much so that, when they come to quarrel with you, the disbelievers say (of the Qur’ān), “It is nothing but tales of the ancients.”
If only you could (be there to) see when they will be made to stand by the Fire, and they will say, “Would that we were sent back, then we would not reject the signs of our Lord, and would join the believers.”
In fact, what they were concealing earlier will become clear to them. If they were sent back, they would again go for what they were forbidden from, as they are sheer liars.
If only you could see when they will be made to stand before their Lord! He will say, “Is this not true?” They will say, “Of course, by our Lord, it is.” He will say, “Then, taste the punishment, for you used to disbelieve.”