The righteous angels are indeed “spirits for public service, sent forth to minister for those who are going to inherit salvation. ”
إِنَّهُمْ حَقًّا ‹ أَرْوَاحٌ خَادِمَةٌ ،‏ مُرْسَلَةٌ لِلْخِدْمَةِ مِنْ أَجْلِ ٱلَّذِينَ سَيَرِثُونَ ٱلْخَلَاصَ › .‏