The Book of Revelation speaks of future evemts tha will take place before and after the Second Coming of Christ.
The Bible says that there will be a period of great suffering and persecution for the Church prior to the time that Christ returns to redeem his people.
Christians will all be in heaven following the return of Jesus Christ to redeem his Church composed of Born Again believers who have the Spirit of God within them. They will reign with Jesus for 1000 years over a remnant of Israel and the Nations who will repopulate the Earth.
When 1000 years ar oer, God willmake all things New. Old and New Covenant Believers will be combined into one New Jerusalem where God will dwell with man on a New Earth for all eternity.