"If you'd only see when they will be held over Hell Fire"

وَلَوۡ تَرَىٰٓ إِذۡ وُقِفُواْ عَلَى ٱلنَّارِ فَقَالُواْ يَـٰلَيۡتَنَا نُرَدُّ وَلَا نُكَذِّبَ بِـَٔايَـٰتِ رَبِّنَا وَنَكُونَ مِنَ ٱلۡمُؤۡمِنِينَ

If you could but see when they will be held over the (Hell) Fire! They will say:
"Would that we were but sent back (to the world)! Then we would not deny the Ayaat (signs, verses, lessons, revelations, etc.) of our Lord, and we would be of the believers!"

(Qur'aan 6:27)