'Grapes' in the Bible

He dug it all around and cleared away its stones,And planted it with the choicest vine (the people of Judah).And He built a tower in the center of it;And also hewed out a wine vat in it.Then He expected it to produce [the choicest] grapes,But it produced only worthless ones.

“What more could have been done for My vineyard that I have not done in it?When I expected it to produce good grapes, why did it yield worthless ones?

“Yet gleanings will be left in the land [of Israel] like the shaking of the olive tree,Two or three olives on the topmost branch,Four or five on the [outermost] branches of the fruitful tree,”Declares the Lord, the God of Israel.