What does Isaiah 1:28 mean?
Isaiah has been painfully clear and will continue to do so. There is no hope for those in Judah who refuse to repent of their sinful ways and to return to faithfulness to the Lord. He emphasizes that "rebels and sinners" will be destroyed by the Lord together. In other words, God's judgment will come down equally on those who are "merely" sinners, failing to obey God. As well as those who are "rebels," denying God's right to rule over them. Lesser disobedience will be no protection from the coming destruction. When God's message is clear, and so are the consequences, there is no room for halfhearted obedience.Those who forsake Yahweh will be consumed. The time to repent and return to obedience is now, not later. Isaiah is pointing forward to the coming invasion of Judah by the Babylonians, who will decimate the city and carry the people of God into exile (Isaiah 36).