فَكَيْفَ كَانَ عَذَابِى وَنُذُرِ
English Translation
And how [severe] were My punishment and warning.
English Transliteration
Fakayfa kana AAathabee wanuthuri
Tafsir of Verse 16
How then were My chastisement and My warnings?
But how (terrible) was My Penalty and My Warning?