If you like the experience of watching a horror movie, then you'll enjoy the watch. The tension and violence in the first scene (you'll know witch) and the mystery throughout is fantastic. The problem seems to be they didn't complete the thought. What are these things? There are plenty of hints throughout, and the impression that if you knew the Bible front to back maybe this would make sense. But I don't think so. By the end I'm left with the impression that the filmmakers didn't have the complete picture thought through. I like a film that I as the viewer need to figure out, but I'm not sure there's anything substantial or satisfying to figure out here.
Acting was great! I don't know what a lot of these other reviewers are talking about.