Original Verse:
Jeremiah Chapter 51 Verse 33For thus saith Jehovah of hosts, the God of Israel: The daughter of Babylon is like a threshing-floor at the time when it is trodden; yet a little while, and the time of harvest shall come for her.

Reference Verses:
Isaiah Chapter 17 Verse 5And it shall be as when the harvestman gathereth the standing grain, and his arm reapeth the ears; yea, it shall be as when one gleaneth ears in the valley of Rephaim.
Isaiah Chapter 21 Verse 10O thou my threshing, and the grain of my floor! that which I have heard from Jehovah of hosts, the God of Israel, have I declared unto you.