Jeremiah 49:14

I have heard a rumour from the LORD, and an ambassador is sent unto the heathen, saying, Gather ye together, and come against her, and rise up to the battle.

The closing part of Jeremiah holds prophecies against Egypt, Philistia, Moab, Ammon, Damascus, and above all Babylon. Within that series this word belongs to the prophecies concerning the nations, including Edom, that were to fall before Nebuchadnezzar. Babylon there means not simply the ancient empire but a type of mystical Babylon, the kingdom that perverted all the other kingdoms of the earth.