Surah Al-Anbya — Ayah 97 (21:97)
وَٱقۡتَرَبَ ٱلۡوَعۡدُ ٱلۡحَقُّ فَإِذَا هِيَ شَٰخِصَةٌ أَبۡصَٰرُ ٱلَّذِينَ كَفَرُواْ يَٰوَيۡلَنَا قَدۡ كُنَّا فِي غَفۡلَةٖ مِّنۡ هَٰذَا بَلۡ كُنَّا ظَٰلِمِينَ ٩٧
English translation (Saheeh International)
And [when] the true promise [i.e., the resurrection] has approached; then suddenly the eyes of those who disbelieved will be staring [in horror, while they say], "O woe to us; we had been unmindful of this; rather, we were wrongdoers."
Brief commentary
Their emergence, terror and violence will be a sign of the rising drawing nearer. The disbelievers will be left wide-eyed in horror, saying: Oh my, what a destruction faces us! We were indulged in futility in the world, preoccupied from preparing for this severe day. Rather, we were wrongdoers by disbelieving and committing sins.