A classic Christmas film, Good Will To Men was an Academy Award nominee for MGM in 1956.
A group of young mice is in the ruins of a church, practicing singing for an upcoming service. After singing an adulterated version of “Hark! The Herald Angels Sing,” the mice wonder about the last line, “Good will to men.” One of them asks the chorus master, an old mouse, “What are men?”
The old mouse explains that they all killed each other off by building bigger and more destructive weapons, first guns, then missiles, then bombs. At the end of the fighting, clouds are seen, implying that nuclear weapons were used by each side.
The old mouse shows the boys some rules to live by that men seem to have forgotten. He is reading from a Bible.
This film was a remake of “Peace On Earth” (1939).