I have a friend who is blind and can see angels. I have not ever seen an angel. But once, when I was alone for the night in a friend's house, I was praying in the living room and sensed the presence of someone very powerful about twelve feet behind me. I did not have the courage to turn and look. I was pretty sure that I would see a being so good and tall as to be frightening.
As I recall this experience I remember the first words angels typically say to the one to whom they are bringing a message. "Do not be afraid."
I wonder, have you seen an angel? Have you sensed the presence of unseen power?