Quran 52:47 from Surah At-Tur on Divine Marvels.
وَإِنَّ لِلَّذِينَ ظَلَمُواْ عَذَابٗا دُونَ ذَٰلِكَ وَلَٰكِنَّ أَكۡثَرَهُمۡ لَا يَعۡلَمُونَ
English translation: And indeed for those who do wrong (is) a punishment before that but most of them (do) not know
Transliteration: wa-inna lilladhina zalamu adhaban duna dhalika walakinna aktharahum la ya'lamuna