Then the unbelievers shall be driven in companies into Gehenna till, when they have come thither, then its gates will be opened and its keepers will say to them, 'Did not Messengers come to you from among yourselves, reciting to you the signs of your Lord and warning you against the encounter of this your day?' They shall say, 'Yes indeed; but the word of the chastisement has been realized against the unbelievers.'