He shall shake off his unripe grape as the vine, and shall cast off his flower as the olive.

He shall be blasted as a vine when its grapes are in the first flower, and as an olive tree that casteth its flower.

He shall shake off his unripe grapes as a vine, and shall cast his flower as an olive.

He shaketh off as a vine his unripe fruit, And casteth off as an olive his blossom.

He is like a vine whose grapes do not come to full growth, or an olive-tree dropping its flowers.

He will be wounded like a grapevine, when its cluster is in first flower, and like an olive tree that casts off its flower.

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.

He shall shake off his unripe grape -
10. Whatever children he may have, they shall never survive him, nor come to mature age. They shall be like wind-fall grapes and blasted olive blossoms. As the vine and olive, which are among the most useful trees, affording wine and oil, so necessary for the worship of God and the comfort of man, are mentioned here, they may be intended to refer to the hopeful progeny of the oppressor; but who fell, like the untimely grape or the blasted olive flower, without having the opportunity of realizing the public expectation.

He shall shake off his unripe (u) grape as the vine, and shall cast off his flower as the olive.
(u) As one who gathers grapes before they are ripe.

He shall shake off his unripe grape as the vine,.... Either the wicked man himself shall shake off or lose his substance; or God shall shake off from him all that was dear and valuable to him; or he shall be shaken by one providence or another, just as a vine is shaken by a violent wind and tempest, and its unripe grapes are battered off by an hailstorm, or plucked off by the hand, or drop off through rottenness; so it is signified by this metaphor, that a wicked man should be stripped of his wealth and riches in a sudden manner; or his children should be snatched from him in their youth, before they were well grown up to maturity, and so like the unripe grape; perhaps respect is had to Job's case, both with regard to his substance and his family:
and shall cast off his flower, as the olive: which tree, when shaken in a violent manner, drops its flower, and so brings forth no fruit; it is observed by naturalists (h), that these two trees, the vine and the olive, flourish much about the same time, and suffer much by storms and tempests, which destroy their fruits, and especially when rain falls in the time of their flowering; the some thing is intended in this clause as in the former.
(h) Plin. Nat. Hist. l. 16. c. 25. l. 17. c. 2. 24.

Images of incompleteness. The loss of the unripe grapes is poetically made the vine tree's own act, in order to express more pointedly that the sinner's ruin is the fruit of his own conduct (Isaiah 3:11; Jeremiah 6:19).