premillennium
Premillennium is a term used in Christian eschatology to describe a theological viewpoint regarding the millennium, a period of 1,000 years mentioned in the Book of Revelation. Premillennialism holds that Christ's second coming will occur before the millennium. This means that the 1,000-year reign of Christ on Earth will happen after his return, not during an intermediate period before it.
There are various interpretations within premillennialism. Historic premillennialism believes the millennium will begin after Christ's return
A key tenet of premillennialism is the belief in a literal, future earthly reign of Jesus Christ.