Angels are very popular as numerous books on the subject testify. Everything in this book about the nature, the scope, the behaviour and the limitations of angels, is borne out from within the bible.
Initially I was very impressed with "An Angel Called Mervin", but having finished, I have mixed feelings about it. I found the cover and title a bit deceptive; they give the impression of a comic, cartoon-like feel to the book. In fact the narrative, through the device of a lecture by the principal training angel to all the newly created angels, gives a view of all the events in the bible, relating to Jesus, from a heavenly perspective. In other words, the story from the angels' viewpoint.
And in many ways, this is enlightening, moving and revealing. Several bible stories which have often seemed bizarre or perplexing, were opened out to me, and made sense for the first time. There were some wonderful images - the idea of invisible armies of angels, wings outstretched, waiting to save Jesus from the cross, and being held back by "the Mighty One" though they longed to intervene.
Later on I wasn't so happy with the way the final biblical prophecies are handled. There has been so much controversy over the centuries about interpretation of these prophecies. My problem may lie with the way this material is handled.
So,in some ways I enjoyed and valued "An Angel Called Mervin", in other ways I found the style of presentation tended to over-simplify and even trivialize.
But if you are interested in angels, try it!