(But when they see it) i.e. chastisement in the Fire (nigh) and it is said: with their own eyes, (the faces of those who disbelieve will be awry) due to the chastisement; and it is also said this means: the faces of the disbelievers will be burnt, (and it will be said (unto them): This) chastisement (is that for which ye used to call) in the life of the world; you used to say that it will never happen.