28 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.
28 Bread corn is bruised; because he will not ever be threshing it, nor break it with the wheel of his cart, nor bruise it with his horsemen.
28 Does one crush grain for bread? No, he does not thresh it forever;
28 n the other hand, wheat is threshed and milled, but still not endlessly. The farmer knows how to treat each kind of grain.
28 Bread flour must be ground; Therefore he does not thresh it forever, Break it with his cartwheel, Or crush it with his horsemen.
28 Grain for bread is easily crushed, so he doesn't keep on pounding it. He threshes it under the wheels of a cart, but he doesn't pulverize it.
Matthew Henry's Commentary on Isaiah 28:28
Commentary on Isaiah 28:23-29
(Read Isaiah 28:23-29)
The husbandman applies to his calling with pains and prudence, in all the works of it according to their nature. Thus the Lord, who has given men this wisdom, is wonderful in counsel, and excellent in his working. As the occasion requires, he threatens, corrects, spares, shows mercy, or executes vengeance. Afflictions are God's threshing instruments, to loosen us from the world, to part between us and our chaff, and to prepare us for use. God will proportion them to our strength; they shall be no heavier than there is need. When his end is answered, the trials and sufferings of his people shall cease; his wheat shall be gathered into the garner, but the chaff shall be burned with unquenchable fire.