Brief interpretation
Just finished watching it for the first time. I'm pretty much writing this just to get my channel my thoughts into something so that I can formulate an interpretation. Here's my take.
The movie is essentially about how blind faith in both God and love can drive us mad. Bess's problem was that her love was essentially selfish. She loved God and prayed to God so that she could get what she wanted. We never actually saw her love of God translate into anything else in the world. Her love of Jan was also completely selfish, as evidenced by her only worrying about her own well being when he left for work. And of course, whether you think her prayer caused it or not, when she selfishly asked for Jan to return, it nearly cost him his life.
The problem really stems from the church. Their are no bells. No music. It is a dull place. Woman are not aloud to speak in church and people who do not blindly follow the ten commandments are damned to hell. It is not wonder that a blind faith in this church would drive one crazy. Bess has repressed her sexually for 30 years (estimate). So it's no wonder that all this repression and built up energy explodes in such a dangerous way.
Anyway, that's a little sloppy and I'm just kind of writing to write. Let me know what you think