Az-Zumar · Ayah 13
قُلْ إِنِّىٓ أَخَافُ إِنْ عَصَيْتُ رَبِّى عَذَابَ يَوْمٍ عَظِيمٍ
Say, "Indeed I fear, if I should disobey my Lord, the punishment of a tremendous Day."
Quran 39:13 (Az-Zumar) · Saheeh International, Noor International Center (QuranEnc v1.1.2)