Job 15:33

It is doubtful if the A. V. expresses a meaning which is true to nature; the vine does not shake off its unripe grapes. The words must rather express the meaning that the grapes are not brought to maturity. The word "shake off" means to "wrong" Proverbs 8:36, and probably the idea is that the vine fails to nourish its grapes and leaves them to dry and wither. This carries out the conception of Job 15:32. The general idea of these verses is that the wicked man is "subject to vanity," his branch prematurely withers (Job 15:32), he puts forth grapes but cannot ripen them, he flowers but he fails of fruit. His endeavours in all directions come short.