No, it’s not another fluff piece on Angels from any number of unethical people trying to make quick cash, it’s actually very well researched and biblical, done by an Old Testament scholar.
I’ve been sick with the flu for the last few days and have been able to do little else than watch videos, so I’ve at least watched some good ones. I happened upon this series today, done by Dr. Michael S. Heiser, an Old Testament scholar and author who also debunks the so-called “ancient alien” theory, along with the TV series by the same name.