Types of Angels

As we have been studying, we have learned that Angels assist in communication/instructions, protection and strength, release from bondage & captivity, and spiritual warfare and execution of God's judgement. We also learned that we are assigned and Angel when we are born and one thing I believe that the Angels will assist an unbeliever into salvation. According to, Hebrews 1:14, are they not all ministering spirits, sent forth to ministering spirits, sent forth to minister for them who shall be heirs of salvation.? Also, I know through the experience of my son's testament who was not living believer's life had an experience. My son was going through mentally. He had been in the mental hospital. He never dealt with anything of this nature and never had a diagnosis of mental illness. However, one night he came to me, and said he had saw an fallen angel, I stated a fallen Angel and went got his phone and should me a picture and it was Michael the Archangel. He stated he was battling and he did not get tired, He said it again he was fighting moma. I told him, he was fighting for you and he went on to say, moma when we were sitting outside he was walking across the street looking at the house. Now, I know my son did not know anything about angels, that is how I was able to believe what he was saying. I knew it was a fight between good and evil. It kind of reminded me of the scripture 2 kings 6:16-17, states And he answered, Fear not: for they that be with us are more than they that be with them. I explained to my son that Michael comes to battle and he was battle for him. it was the whole Heaven backing us more then the demons that was trying to destroy him.