﴿ يَخَافُونَ رَبَّهُم مِّن فَوْقِهِمْ وَيَفْعَلُونَ مَا يُؤْمَرُونَ ۩ ﴾

“they fear their Sustainer high above them, and do whatever they are bidden to do.”

They fear their Lord, that is, they are broken, effected and acted upon by Him in the way that a fearful person is acted upon [by the thing that causes in him fear], from above them, from His subjugation, influence and exaltedness over them, and they do what they are commanded, in obedience and compliance in such a way that they are unable to do anything else.