For afore the harvest, when the bud is perfect, and the sour grape is ripening in the flower, he shall both cut off the sprigs with pruning hooks, and take away and cut down the branches. The flower "The blossom" - Hebrews her blossom; נצה nitstsah, that is, the blossom of the vine, גפן gephen, vine, understood, which is of the common gender. See Genesis 40:10. Note, that by the defective punctuation of this word, many interpreters, and our translators among the rest, have been led into a grievous mistake, (for how can the swelling grape become a blossom?) taking the word נצה nitstsah for the predicate; whereas it is the subject of the proposition, or the nominative case to the verb.
Related Commentaries of Isaiah 18:5
Isaiah 18:5
5 For afore the harvest, when the bud is perfect, and the sour grape is ripening in the flower, he shall both cut off the sprigs with pruning hooks, and take away and cut down the branches.