Matthew Poole and continuators on Jeremiah 51:33

33 For thus saith the LORD of hosts, the God of Israel, The daughter of Babylon is like a threshing floor , it is time to thresh her: yet a little while, and the time of her harvest shall come .

Babylon had been a threshing instrument, by which, and a threshing floor in which God had threshed many other Nations, God now intended to make it as a threshing floor wherein he would thresh the Chaldeans.

Some think because of the next words that the words were better translated it is time to tread her, (so the word properly signifies) as men use to prepare their threshing floors against the time of Harvest, for the time of this Harvest was near, her Harvest signifieth the Harvest which the Justice of God would have from the ruine of the Chaldeans.

Marginal references: Or, in the time that he thresheth her.