What is the Day of the Lord? Listen to this lesson to hear that the Day of the Lord is used in a general sense as a day of judgment in the Old Testament and also as a specific climatic event when Christ returns to judge the earth. Find out a chronological order of a number of Old Testament judgments. Hear about the cosmic disturbances that accompany the Day of the Lord. Understand that no one gets away with wrongdoing even though it may appear so at the time, but that Christ will eventually judge all sin and evil.