Al Anbya Ayah 49

ٱلَّذِينَ يَخْشَوْنَ رَبَّهُم بِٱلْغَيْبِ وَهُم مِّنَ ٱلسَّاعَةِ مُشْفِقُونَ ٤٩ who are in awe of their Lord without seeing Him, and are fearful of the Hour.