"Indeed, those who fear their Lord unseen," meaning in private, by remembering their sins in solitude before Allah, which causes them to fear Him. Interpretation of Surah al-Mulk from verse (13-18).
﴿إِنَّ الَّذِينَ يَخْشَوْنَ رَبَّهُمْ بِالْغَيْبِ﴾ فِي السِّر بَذِكْرِ ذُنُوبِهِ فِي الْخَلَاء (٣) الله مِنْهَا. تَفْسِير سُورَة الْملك من الْآيَة (١٣ - ١٨)
