For those who are in opposition to Him, who deny any need for His mercy and grace, that day will be a terrible day of battle (Isaiah 2:12 Isaiah 13:6 Ezekiel 30:3 Revelation 16:14), which they are doomed to lose. The day of the Lord is mentioned in the Bible over twenty times, and refers to a day at some future but unknown time, when the people of the earth will meet God's judgment.
