Commentaries:
Barnes' Notes
He shall shake off his unripe grape as the vine - The idea here is, that the wicked man shall be like a vine that casts off its grapes while they are yet sour and green, and brings none to perfection; compare the notes at Isaiah 18:5. Scott renders this,
"As when the vine her half-grown berries showers,
Or poisoned olive her unfolding flowers."
It would seem from this passage that the vine might be so blasted by a hot wind or other cause, as to cast its unripe grapes to the earth. The employment of a figure of this kind to illustrate an idea supposes that such a case was familiar to those who were addressed. It is well known that in the East the grape and the olive might be blasted while in blossom, or when the fruit was setting, as all fruit may be. The injury is usually done in the flower, or when the fruit is just forming. Yet our observations of the effects of the burning winds that pass over the deserts on fruit that is half formed, in blasting it and causing it to fall, are too limited to allow us to come to any definite conclusion in regard to such effects in general. Anyone, however, can see the beauty of this image. The plans and purposes of wicked people are immature. Nothing is carried to perfection. They are cut off, their plans are blasted, and all the results of their living are like the sour, hard, crabbed, and useless fruit that falls from the tree before it is ripe. The results of the life of the righteous, on the other hand, are like a tree loaded with ripe and mellow fruit - their plans are brought to maturity, and resemble the rich and heavy clusters of grapes, or the abundant fruits of the olive when ripe.
And shall cast off his flower as the olive - The olive is a well-known tree that abounds in the East. The fruit is chiefly valuable for the oil which it produces; compare the notes at Romans 11:17. The olive is liable to be blasted while the fruit is setting, or while the tree is in blossom. In Greece, a northeast wind often proves destructive to the olive, and the same may be true of other places. Dr. Chandler speaking of Greece, says, "The olive groves are now, as anciently, a principal source of the riches of Athens. The crops had failed five years successively when we arrived; the cause assigned was a northerly wind, called Greco-tramontane, which destroyed the flower. The fruit is set in about a fortnight, when the apprehension from this unpropitious quarter ceases. The bloom in the following year was unhurt, and we had the pleasure of leaving the Athenians happy in the prospect of a plentiful harvest." A wicked man is here elegantly compared with such a tree that casts its flowers and produces no fruit.
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