Heb. ṣulah, “[ocean or river] depth.” This is the only use of the word in the OT. This prediction was fulfilled when Cyrus turned the waters of the Euphrates out of their course in order that his soldiers might enter Babylon. Jeremiah made similar predictions concerning the fall of Babylon, comparing it to the drying up of the river Euphrates (see on Jer. 50:38; 51:36; cf. Rev. 16:12).