Dr. Mustafa Khattab, the Clear Quran - Surah Al-Qamar, ayah 16

Translation of Surah Al-Qamar, ayah 16 (54:16)

فَكَيۡفَ كَانَ عَذَابِي وَنُذُرِ ١٦
Then how ˹dreadful˺ were My punishment and warnings!