﴿ قُلْ إِنِّىٓ أَخَافُ إِنْ عَصَيْتُ رَبِّى عَذَابَ يَوْمٍ عَظِيمٍۢ ﴾

“Say: "Behold, I would dread, were I [thus] to rebel against my Sustainer, the suffering [which would befall me] on that awesome Day [of Judgment]."”

Say ‘Indeed I fear if I should rebel against my Lord by worshipping other than Him the chastisement of a dreadful day’ namely the Day of Resurrection.