Isaiah 28:27-28
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27For the fitches are not threshed with a sharp [threshing] instrument, neither is a cart wheel turned about upon the cummin; but the fitches are beaten out with a staff, and the cummin with a rod. 28Bread [grain] is ground; for he will not be always threshing it: and though the wheel of his cart and his horses scatter it, he doth not grind it.
Isaiah 28:27-28 (ASV)