عَامِلُونَ بِأَمْرِهِ
They act according to His command.
Historical discussions record differences about the full extent of angelic protection: does every angel enjoy complete immunity from every possible lapse, or should particular emphasis be placed on the protection of principal angels in their mission?
One position applies the universal expressions to all angels. Some exegetes entertained alternative explanations for reported exceptional events. The revealed general rule of obedience should not be treated as equally uncertain as disputed ancillary narratives. Strong evidence must govern doctrinal claims.