'Grape gatherers' in the Bible

"'Therefore tell them all these words, and say unto them: The LORD shall cry from above, and let his voice be heard from his holy habitation. With a great noise shall he cry from his regal court. He shall give a great voice, like the grape gatherers, and the sound thereof shall be heard unto the ends of the world.

The grape gatherers shall make great moan, when the vineyard and fig trees be so utterly wasted. Yea all the pomegranates, palm trees, apple trees, and the other trees of the field shall wither away. Thus the merry cheer of the children of men shall come to confusion.

If the thieves and robbers came to thee by night, thou taking thy rest: should they not steal, till they had enough? If the grape gatherers came upon thee, would they not leave thee some grapes?