en_tn/isa/21/09.md

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. Alternate translation: "The people of Babylon are completely defeated" (See: rc://en/ta/man/jit/figs-metaphor and rc://en/ta/man/jit/figs-metonymy)

fallen, fallen

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