And had it not been for God's having ordained banishment for them, He would indeed have imposed [yet greater] suffering on them in this world: still, in the life to come there awaits them suffering through fire:

THEY WILL ASK thee [O Prophet] about the Last Hour: "When will it come to pass?" Say: "Verily, knowledge thereof rests with my Sustainer alone. None but He will reveal it in its time. Heavily will it weigh on the heavens and the earth; [and] it will not fall upon you otherwise than of a sudden." They will ask thee - as if thou couldst gain insight into this [mystery] by dint of persistent inquiry!* Say: "Knowledge thereof rests with my Sustainer alone; but [of this] most people are unaware."

Consider the day as it reveals the world,*

And when Moses came [to Mount Sinai] at the time set by Us, and his Sustainer spoke unto him, he said: "O my Sustainer! Show [Thyself] unto me, so that I might behold Thee!" Said [God]: "Never canst thou see Me. However, behold this mountain: if it remains firm in its place, then - only then - wilt thou see Me.* And as soon as his Sustainer revealed His glory to the mountain, He caused it to crumble to dust; and Moses fell down in a swoon. And when he came to himself, he said: "Limitless art Thou in Thy glory! Unto Thee do I turn in repentance; and I shall [always] be the first to believe in Thee!"*

and the day as it rises bright!