In prophecy, in general, this is any day of judgment or blessing by the Lord. The tribulation years are one example of the day of the Lord. The Day of Christ—Refers to the rapture of the Church and Jesus’ judgment seat (Philippians 1:6). The Day of God—Refers to the beginning of the eternal state (2 Peter 3:12-13) or to the Battle of Armageddon (Revelation 16:14).