I definitely thought this could have been better, I could see some potential here. Do you know what a biblically accurate angel looks like? They're terrifying eldritch nightmares. I just want one movie to have something like that. But here we just get the angels that are basically just like humans.
This movie needed more stuff with the angels. All of the angel characters are infinitely more interesting than the human characters. We especially needed more from Christopher Walken, he was the best part of the movie.
I thought the main guy could've been really interesting because of his backstory, but it doesn't really play out in the narrative. It just establishes him as having knowledge on the Bible.