Jeremiah 51:2 KJV
And will send unto Babylon fanners, that shall fan her, and shall empty her land: for in the day of trouble they shall be against her round about.
Jeremiah 51:2, King James Version
In context
1 Thus saith the Lord; Behold, I will raise up against Babylon, and against them that dwell in the midst of them that rise up against me, a destroying wind;
2 And will send unto Babylon fanners, that shall fan her, and shall empty her land: for in the day of trouble they shall be against her round about.
3 Against him that bendeth let the archer bend his bow, and against him that lifteth himself up in his brigandine: and spare ye not her young men; destroy ye utterly all her host.