Surely Allah does not wrong men; they rather wrong themselves. (But today they are oblivious of everything except enjoyment of worldly life.) And on the Day when He will muster all men together, they will feel as though they had been in the world no more than an hour of the day to get acquainted with one another. (It will then become evident that) those who called the lie to meeting with Allah were utter losers and were not rightly-directed.
(Al-Qur’an - 10:44-45)
Allah the Exalted has generously endowed people with all that is needed to help them distinguish between right and wrong, truth and falsehood – ears, eyes, and hearts. But some people have become virtual slaves to their lusts and are utterly spellbound by the allurements of a worldly life. By so doing, they have caused their eyes to go blind, their ears to become deaf, and have perverted their hearts to such a degree that they have become bereft of the capacity to distinguish between what is good and what is evil, what is right and what is wrong. They have in fact debilitated their conscience to such a low that it has ceased to have any effect on their lives.
A time will come when such people will, on the one hand, come face to face with the infinite life of the Hereafter, and on the other, take back at their past worldly life and realise how puny it was as compared to the life ahead. It is then that they will comprehend what folly they have committed by ruining their eternal future for the sake of ephemeral pleasures and benefits in this worldly life. But this realisation of theirs will be of no use for them; for then there will be no time for them to take corrective measures even if they would wish to. That time will be of reaping the harvest of what one has sowed during his life on earth.
The last sentence refers to the unbelievers’ rejection that a time will come when everyone will have to stand before God for His judgement. But on that Final Day they will see everything before their eyes.