God has planted people in this world like a vineyard. The natural outcome should be healthy growth, but sometimes God’s people are like rotten fruit.
God will remove anything that stands between himself and his people, even their own pride and possession.
Isaiah calls God’s people back to true worship beginning with the removal of anything that hinders their (or our) faith in God.
God is calling His people to learn what it really means to repent and live as true followers of the living God. Anything else is unacceptable.