In the movie The Hunt For Red October, Marko Ramius (Sean Connery) begins the movie speaking Russian-- as do all Russian characters. Upon reading the following passage from the Book of Revelations (Revelation 16:15-17), on the word 'armageddon,' the characters begin to speak English instead.
[in Russian] "Behold, I am coming as a thief... and he gathered them all together in a place called Armageddon... [in English] and the Seventh Angel poured forth his bowl into the air, and a voice cried out from Heaven, saying, "It is done!" A man of your responsibilities reading about the end of the world? And what's this? "I am become Death, the destroyer of worlds."
Why the switch? Why not just start out in English? Why on that passage, and that word, specifically?