Quran 38:5 from Surah Saad on Divine Marvels.
أَجَعَلَ ٱلۡأٓلِهَةَ إِلَٰهٗا وَٰحِدًاۖ إِنَّ هَٰذَا لَشَيۡءٌ عُجَابٞ
English translation: Has he made the gods (into) one god (into) one god Indeed this (is) certainly a thing curious
Transliteration: aja'ala al-alihata ilahan wahidan inna hadha lashayon ujabun