7إِنَّما توعَدونَ لَواقِعٌAli UnalSurely what you are promised is bound to take place:1Angels have very important functions or duties in both our lives and the operation of the universe around them. The Qur’ān mentions the angels with the duties they fulfill and in the groups that fulfill those duties. For example, see 37: 1–3; 79: 1–5. However, we usually live unaware of either them and their universal duties. In these initial verses, God focuses our attention on them, particularly those of them conveying the Revelation to the Messengers, thus playing a role in the separation of right from wrong, and the separation of those who serve right from those who serve wrong. God concludes the oaths He makes by those angels by emphasizing that the Day of Resurrection will most certainly come.