I vaguely remember seeing an episode of a Science-Fiction series many many years ago. It was something about a conquering alien race coming to Earth.
In this episode a priest brought a Bible to the alien race on their mother-ship, trying to convince them to adopt a peaceful way. The alien commander enjoyed reading the Bible, but the only conclusion he got is that one's enemies need to be crushed hard, which clearly was not the priest's intention. Unfortunately I can't remember anything else.
Can someone tell me what series this was?