What does Isaiah 2:11 mean?
Isaiah is describing the day of the Lord for the people of Judah in Israel. The phrase "day of the Lord" is used throughout the Bible, in both Old and New Testaments. It describes a day of judgment in which God makes good on His promise to hold accountable all who have rejected Him by continuing to live in evil and sin (Ezekiel 30:3; Obadiah 1:15; Acts 2:20; 2 Peter 3:10).That fateful day is coming for the idol-worshipping Israelites of Isaiah's time. He has told them to try to hide from the Lord in caves, but it will not help (Isaiah 2:10; Revelation 6:15–17). The Lord will find them and bring justice upon them.
The result will be the end to human arrogance in Israel. They will be completely humbled and defeated. The Lord, however, will be exalted. The splendor of His glory will be obvious to all who have failed to see it. The Lord's cause and purpose will be victorious even as His own people are defeated in judgment.