The definition in my Bible Dictionary reads:
An angel is a supernatural being, a little higher in dignity than man. They are spirits created by God before the creation of man as told us in Job 38: 6, 7 – On what were its footings set, or who laid its corner stone while the morning stars sang together and all the angels shouted for joy? It seems the angels rejoiced as they watched God create the world.
The angels serve God by serving/protecting God’s people. Are not all angels ministering spirits sent to serve those who will inherit salvation? (Hebrews 1: 14) Some believe that there is an angel assigned to each child for a lifetime. This idea comes from Matthew 18:10 where we are told; See that you do not look down on one of these little ones. For I tell you that their angels in heaven always see the face of my Father in heaven. It is a comforting idea, however the main point Scripture is making here is that the angels watch over each child and report to God what they see. When children are mistreated and abused God knows and sees and will act accordingly – if not in this lifetime, then later when the abuser is judged.
The angels have many “job descriptions” if you will. We will talk about that later in our discussion.