When the wheat crop failed, he threshed the straw at a dead loss to demonstrate how little grain there was, and thus prove his case against Providence.
Our present-day harvester cuts off the heads of wheat, threshes it, weighs it, and dumps it into sacks which are thrown off as fast as two expert workmen can sew them up.
Scholars say they did not share one carefully threshed-out canon of agreed religious texts; instead, the stories passed from teller to teller and were different in different regions and times.
Ephraim is a trained heifer that loves to thresh; so I will put a yoke on her fair neck. I will drive Ephraim, Judah must plow, and Jacob must break up the ground.
Grain must be ground to make bread; so one does not go on threshing it forever. The wheels of a threshing cart may be rolled over it, but one does not use horses to grind grain.