Babylon has fallen, fallen

Babylon being completely defeated by their enemies is spoken of as if Babylon has fallen. Here "Babylon" is a metonym that represents the people of Babylon. AT: "The people of Babylon are completely defeated" (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-metonymy)

fallen, fallen

The word "fallen" is repeated to emphasize that the people of Babylon were completely defeated by their enemies.