﴿ يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ وَلَا يَشْفَعُونَ إِلَّا لِمَنِ ٱرْتَضَىٰ وَهُم مِّنْ خَشْيَتِهِۦ مُشْفِقُونَ ﴾

“He knows all that lies open before them and all that is hidden from them: hence, they cannot intercede for any but those whom He has [already] graced with His goodly acceptance, since they themselves stand in reverent awe of Him.”

(He knoweth what is before them) of the matter of the Hereafter (and what is behind them) of the matter of this worldly life, (and they) i.e. the angels (cannot intercede) on the Day of Judgement (except for him whom He accepteth) except for those who profess Allah's divine Oneness and with whose monotheism Allah is pleased, (and they quake for awe of Him) among those who fear Him.