Note: This scene took place several thousand years ago
Ogg the cave man stepped out of his cave one morning. His knee was hurting him. The tail of that huge dinosaur that the tribe had managed to kill last week had struck him right on his left knee. He was glad he was still alive. The next morning it rained.
This scenario took place several more times with Ogg's knee hurting and then rain occurring the next morning. One afternoon, he stepped out of his cave and his knee was hurting. So he called all of the tribal chiefs together and said: "I have received a message from the spirits. Tomorrow morning it will rain." They all thought he was crazy as a bugbear but didn't say anything because he was a pretty strong and fierce individual. When it rained the next morning they all got scared. After this happened a few more times and Ogg was never wrong, they started to call him the "sacred" one who could foretell the future.
Ogg milked it for all it was worth and eventually was given the best cave, all the best food, particularly the best cuts of meat and the first choice of captured women. In general, he became a tribal hero.
The next thing you know he was telling everyone what to do and they were following him like sheep. Soon he built a special hut where people could go to tell him what a great guy he was and beg him to tell them what to do. He called it his church. Does that strike a chord? Any questions?