What remain constant in every account of angels, from ancient days to the present, is that they are both messengers and companions to humans, sent from a realm beyond usual seeing. Angels appear, and in one way or another, help us, advise us, inspire us, or amaze us.
All this is simply to say that all life is interrelated. We are caught in an inescapable network of mutuality; tied in a single garment of destiny. Whatever affects one directly, affects all indirectly. As long as there is poverty in this world, no one can be totally rich even with a billion dollars. As long as diseases are rampant and millions of people cannot expect to live more than twenty or thirty years, no one can be totally healthy, even with a clean bill of health from the finest clinic in America. Strangely enough, I can never be what I ought to be until you are what you ought to be. You can never be what you ought to be until I am what I ought to be. This is the way the world is made.