Belief in Allah's angels does not end with believing that they exist. The full faith in the angels should be exactly as Allah and His Messenger peace be upon him said. We must believe in their epithets, their services, and their characteristics.
Allah has revealed in the Quran several verses about the attributes of angels. The Prophet peace be upon him gave us all the necessary information about angels in his hadith. We must believe in these qualities.
The angelic chiefs are three. Jabrail, Mikail, and Israfil, they are representative to life. Jabrail alayhissalaam is representative to the revelation that is the life of souls and spirits. Mikail alayhissalaam is representative to the rain that is the life of the earth. And Israfil alayhissalaam is entrusted with the blowing of the Horn which causes life after death.
They are the messengers of Allah to His creatures and work. Messengers between Allah and His slaves. They bring the affair from His Presence to the world. And they bring affairs to His Presence.