Great flick btw. Gene Hackman, Richard Harris and Max Von Sydow I believe. Max was the girlie man missionary.
Mark Twain said of these missionary families, “They came to do good, and they done right well.”
I've read that the old Hawaiian religion had lots of taboos, but when sailors started visiting the islands and ignored the taboos, but nothing bad happened to them as a result, that caused a collapse in people's belief in their religion. Soon after that the Protestant missionaries arrived from the US.