The next to last section of Malachi shows that even as the nation of Israel (specifically the returned remnant of Judah) has been unfaithful, there are individuals among the people who are faithful. At the very least, they are willing to respond to God’s correction. As a result, God promises to protect them from the upcoming wrath. This reckoning is described in dramatic, fiery terms. Part of the purpose of this particular judgment is to distinguish the wicked from the righteous. In this case, those who follow God will be healed and set free. Those who do not will be completely consumed.