'Threshing floors' in the Bible

David was told, "Behold, the Philistines are fighting against Keilah, and are robbing the threshing floors."

Then was the iron, the clay, the brass, the silver, and the gold, broken in pieces together, and became like the chaff of the summer threshing floors; and the wind carried them away, so that no place was found for them: and the stone that struck the image became a great mountain, and filled the whole earth.

The threshing floors will be full of wheat, and the vats will overflow with new wine and oil.