Day of judgment
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, then Christians who are saved by their faith in Jesus 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.