35th Ayah from Surah Al Muddaththir
Indeed, the Fire is of the greatest [afflictions]
It is one of the mightiest things,
Verily, it (Hell, or their denial of the Prophet Muhammad SAW, or the Day of Resurrection) is but one of the greatest calamities.
it (Saqar : Hell) is one of the greatest things
Lo! this is one of the greatest (portents)
This is but one of the mighty (portents),