54:21
فَكَيْفَ كَانَ عَذَابِى وَنُذُرِ
And how [severe] were My punishment and warning.
The Moon
فَكَيْفَ كَانَ عَذَابِى وَنُذُرِ
And how [severe] were My punishment and warning.
Nearby ayahs help place verse 54:21 in sequence and meaning.
إِنَّآ أَرْسَلْنَا عَلَيْهِمْ رِيحًا صَرْصَرًا فِى يَوْمِ نَحْسٍ مُّسْتَمِرٍّ
Indeed, We sent upon them a screaming wind on a day of continuous misfortune,
تَنزِعُ ٱلنَّاسَ كَأَنَّهُمْ أَعْجَازُ نَخْلٍ مُّنقَعِرٍ
Extracting the people as if they were trunks of palm trees uprooted.
وَلَقَدْ يَسَّرْنَا ٱلْقُرْءَانَ لِلذِّكْرِ فَهَلْ مِن مُّدَّكِرٍ
And We have certainly made the Qur'an easy for remembrance, so is there any who will remember?
كَذَّبَتْ ثَمُودُ بِٱلنُّذُرِ
Thamud denied the warning