Translation for 21:49

ٱلَّذِينَ يَخۡشَوۡنَ رَبَّهُم بِٱلۡغَيۡبِ وَهُم مِّنَ ٱلسَّاعَةِ مُشۡفِقُونَ ٤٩
who are in awe of their Lord without seeing Him,1 and are fearful of the Hour.

Foot notes

76969

 This can also mean that they are in awe of their Lord as much in private as they are in public.