O daughter of Babylon, who are to be destroyed; happy shall he be, that rewards you as you have served us.
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Augustine of Hippo
11. Then he turneth himself to her, "0 daughter of Babylon, unhappy;" unhappy in thy very exulting, thy presumption, thine enmity; "unhappy daughter of Babylon!" (ver. 8). The city is called both Babylon, and daughter of Babylon: just as they speak of "Jerusalem" and "the daughter of Jerusalem," "Sion" and "the daughter of Sion," "the Church" and "the daughter of the Church." As it succeedeth the other, it is called "daughter;" as it is preferred before the other, it is called "mother." There was a former Babylon; did the people remain in it? Because it succeedeth to Babylon, it is called daughter of Babylon. O daughter of Babylon, "unhappy" thou! ...