However, where angels appear in human form, as is the case here, they may be perceived without a visionary context. At what point does Abraham realize his guests are angels?

Human beings share much in common with angels, including intelligence, free will, a beginning, and the fact that we are all part of God’s creation.

Angels abound, of course, in popular songs, poetry, movies and television programs. At this time of year they are inescapable. But what are they? It depends on whom you talk to.