It's very clear that a non-religious person wrote this film and that they take a dim view of priests, and all of that would be fine if they had something intelligent to say.
Instead, an extremely far-fetched narrative takes place that is so thin only the worst demographic of horror fans could find it redemptive. David is a humble priest who struggles to keep his small town and nearly empty church afloat. Here's the thing - Catholic priests are pretty much NEVER this isolated. The Roman Catholic Church is a huge organization and some may dismiss its bureaucracy as less than spiritual, but in fact it serves a very moral purpose: to keep priests from turning into Evangelical cult leaders or tv preachers, the level of education and social system inherent to Roman Catholicism would render this entire movie utterly implausible. Really, David should have been an Evangelical or Baptist preacher, but then the pseudo-intellectual who came up with this mean-spirited film couldn't make him "bad" because he's a celibate closeted homosexual instead of a married man.
Isolated and deeply religious, all it takes are a few drinks with a deranged homeless couple to whom he naively offers shelter to turn him into a schizophrenic severe alcoholic and mass murderer.
It's so far-fetched, it's so so bad....the homeless people are also depicted so meanly, so cruelly, like a stereotype of what a conservative jerk thinks a homeless person is - rude, entitled, stupid, addicted to drugs, and utterly corrupt.
It's just a bad movie. I waited for it to get better or redeem itself and no it was just an excuse for an angry atheist to use a mediocre religious backdrop in a violent low budget flick.