Prophets are people who have a special ability for listening to and speaking for God. The prophet Isaiah, who lived around the eighth century B.C.E., was an adviser to the king of Judah. At that time, the kingdom was under attack from Assyria, Isaiah told the king that god would protect the people if they had faith, but if they rejected god, they would be destroyed.
My friend had a vineyard on a fertile hillside; he spaded it, cleared it of stones, and planted the choicest vines; . . . Then he looked for the crop of grapes, but what it yielded was wild grapes . . . Now, I will let you know what I mean to do to my vineyard: Take away its hedge, give it to grazing, break through its wall, let it be trampled! Yes, I will make it a ruin: it shall not be pruned or hoed, but overgrown with thorns and briers; I will command the clouds not to send rain upon it. The vineyard of the Lord of hosts is the house of Israel, and the men of Judah are his cherished plant. (Isaiah 5: 1-7))
In your own words, explain what Isaiah was saying here.