Isaiah 28:26-28

Amplified Bible

²⁶ 
For his God instructs [him correctly] and teaches him properly.
²⁷ 
For dill is not threshed with a sharp threshing sledge,
Nor is a cartwheel rolled over cumin;
But dill is beaten out with a staff, and cumin with a rod.
²⁸ 
Bread grain is crushed fine,
Indeed, the farmer does not continue to thresh it forever.
Because the wheel of his cart and his horses eventually damage it,
He does not thresh it longer.