I feel it’s almost too closely related to Christian mythology... But the Bible is all just made up anyway, why not make take something random out of it and make an interesting story? Then at least something good comes from it, instead of all the bad that spews everywhere.
Because the angels and demons of Christian mythology are nothing like this, and have little to do with what Christianity supposes the "world" order of heaven and hell to be. I have no belief either, but so often angels and demons are basically rendered as if they were humans with powers (showing perhaps our own limited imaginations) with the same nature and motivations, and with a characteristic role reversal of making the angels the bad guys instead of the good guys. Or just both being somewhere in the grey zone. That's what I meant by it having little to do with actual Christian mythology.
BTW- while it may be your opinion that the Bible is made up, it isn't a fact. It isn't something that can be proved. Nor can you prove that something like God, or ghosts for that matter, doesn't exist. It is scientifically impossible to prove a negative existence of that sort. You can make various arguments for why you consider it unlikely, but there will never be conclusive proof.
Also I did write that I wasn't sure whether to applaud the artistic liberties or not. Which means I'm kind of divided on the issue. I think at this point I have seen so many stories using angels and demons as a theme in a similar manner that it neither feels really new nor inspired.
While entertaining, this has nothing to do with actual Christian lore and mythology. I don't know whether to applaud the artistic liberties or be annoyed that once again angels and demons are being used in a way that bears little resemblance to the source material (whether or not you believe in it).
I also thought that line about refugees was beyond acceptable.