I forget the book, chapter, and verse of the passage in the Bible that refers to chariots of fire in the sky, but, and this might make you spit up your coffee so be careful, but truth is we don't know the true nature of God other than we are told we are made in his image and that he is both loving and at times angry.
That being said, the U.S. government is now acknowledging that they've known about UFO's for decades and have recently released amazing video recorded by fighter pilots. Video showing craft doing things that the G-force would kill a human. All through history there are recorded examples of observations of both craft in the sky and of individuals that weren't exactly men.
What if angels are beings in very advanced vehicles monitoring us? What if humans are the result of their guidance in design over a very long time? There are so many systems in our bodies with specific purposes that it's hard to believe it's not by design, just random mutations.
Not to put down religion, nor am I denying the existence of God. But what and who is God exactly? There are too many occurrences of unexplained phenomena to not acknowledge that our understanding is limited. And to be honest it throws open what is acceptable and unacceptable beyond our daily squabbles. Laugh and scoff if you like, but when the government, which has the most sophisticated technology in the world, admits there's something definitely there that they can't explain, with video proof, I'm beginning to believe that we not only aren't alone, but have never been. And their technology is much greater than ours.