Jeremiah 50:24

I have laid a snare for thee, and thou art also taken, O Babylon, and thou wast not aware, the calamity overtaking her before she realized it; thou art found and also caught because thou hast striven against the Lord. When Cyrus took the city, his stratagem in diverting the waters of the Euphrates caught the inhabitants by surprise to such an extent that parts of the city were in the hands of his soldiers before those living in its center were aware of it.