What does Isaiah 5:7 mean?
Isaiah has been telling his audience a song about a vineyard built and cared for by a farmer he calls his "beloved" (Isaiah 5:1). This vineyard fails because the grapes are worthless (Isaiah 5:2). In his disgust, the farmer has declared that he will tear down the protective wall and let the animals devour what remains (Isaiah 5:5). He will also direct the clouds not to rain on the vineyard making the destruction of the vineyard complete (Isaiah 5:6).The prophet has reached the point in the parable where he openly explains what his song has been about. His "beloved" is none other than the Lord. All along God has been the owner and farmer of this vineyard. And the vineyard is Israel and Judah. The Lord is going through great lengths to ensure the people understand He established His people as His own. They are His vineyard. His desire for them was that of a grape farmer, that his vines would produce good and useful fruit.
Instead, God's people—the vines of the garden—have produced a corrupt and sour crop. At harvest time, the Lord went to look for good deeds bringing Him honor. Instead, He found lawlessness. Instead of honoring the Lord and bringing justice to those who were treated poorly, the Israelites' behaviors were as worthless as sour grapes (Isaiah 3:9–15).
The frustration of the owner of the vineyard represents God's frustration with His people Israel. His plan to leave the vineyard in ruin because of its worthlessness fits with the Lord's plan to leave Israel and Judah a wasteland. The animals who will destroy the vines are the invading armies that will destroy Jerusalem and Judah (2 Kings 24:14).