The Day of the Lord is mentioned several times in the Old Testament (e.g. Book of Ezekiel chapter 13 v.5 and Isaiah chapter 2 v.12). In the New Testament the coming of Christ as Judge of the world is mentioned very often. In Paul’s letters and in the Revelation to John, the Christians who are good will reign with Christ. When Christ comes, His arrival will be announced by a trumpet call. He will come down from heaven. All the people who are alive will stay alive, and all the people who are dead will become alive again.