Isaiah tells the people of Israel this parable: The owner of the land, with great effort, plants vines on a very fertile hill. He got grapes, but not the kind of grapes he had worked for. He vows to make a new start, to tear down the wall that protects the vines, to quit tending them, not to prune or hoe, and he will quit watering them.
Isaiah is trying to get them to think about how much sense the landowner's reaction makes. "Apply this parable to your own lives. God gave you this land and cared for your needs. God expected great things from you. God expected to you to yield justice and righteousness. That's not what you did."