MAN AWAKENS WHEN IT AVAILS NAUGHT!
VERSES NO.21-26
Man is warned here against the Day of Resurrection, when all deeds are reckoned and rewarded. When man sees the dreadful scenes of hell, he awakens and looks at his past and is regretful for what he has done, but his regret and repentance has no use.
The transgressors are punished in the worst way, while the righteous are rewarded in the best way.