Jamieson, Fausset and Brown on Jeremiah 50:24

24. I--Thou hast to do with God, not merely with men.

taken ... not aware--Herodotus relates that one half of the city was taken before those in the other half were "aware" of it. Cyrus turned the waters of the Euphrates where it was defended into a different channel, and so entered the city by the dried-up channel at night, by the upper and lower gates (Da 5:30, 31).