O Man!

When the sky is rent asunder, obeying its Lord in true submission; when the earth is expanded and casts out all that is within it and becomes empty, obeying its Lord in true submission; then, O man, strive hard towards your Lord until you meet Him.

He that is given his book in his right hand shall have a lenient reckoning and go back rejoicing to his people. But he that is given his book from behind his back shall call down destruction on himself and burn in the fire of Hell; for he lived without a care among his people and thought he would never return to God. Yes; but his Lord was ever watching over him.

I swear by the glow of sunset; by the night and all that it brings together; by the moon, in its full perfection: that you shall march onwards from state to state.

Why then do they not have faith, or kneel in prayer when the Quran is read to them?

The unbelievers indeed deny it; but God knows best the falsehoods they believe in.

Therefore proclaim to all a woeful doom, save those who embrace the true faith and do good works; for theirs is an unfailing recompense.

(The Quran 84:1-25)

What has been said here regarding Doomsday appears to concern an unknown world. However, so many proofs exist which indicate the veracity of these statements. One example is provided by this present world.

The presence of this world is in itself a proof that another world like this, or better than this, can come into existence. Secondly, many extraordinary aspects of the Quran prove that it is a book of God. With such clear evidence, those who do not believe in the Hereafter and lead a life of neglect of the Hereafter are indeed committing an unpardonable offence.