The plot is also not very subtle in its foreshadowing of the twist at the climax of the film. A small town in Louisiana is being plagued by phenomenon which appear Biblical in nature; water turns to blood, a swarm of locusts, boils, etc. The entire town blames a little girl who lives on the outskirts, her family already socially outcast. Even her mother appears to wish her dead. Of course the whole town is in on it, and the little girl is the victim.
I guess the question I would ask is why it took God so long to intervene?
The plot is the weakness of this film. The acting is convincing, and the special effects are top-of-the-line. When the foundation of the film is weak, there simply isn't much you can do for it. The film isn't terribly frightening, and lacks any real depth.