The word millennium is a way of delineating the thousand-year period mentioned specifically in Revelation 20:2-7. However, over the last century, there has been a growing debate over the purpose, nature and even the reality of this period mentioned in the Bible. Personally, I take the Bible at face value.
When it refers to this period of time specifically as “a thousand years” or “the thousand years” six times in those six verses, I take that to mean there is going to be a specific thousand-year period, not a long, indefinite period of time, where the world gets better and better. Why would John call it a, or the, thousand years, six verses in a row, if he meant something less specific?
So what do we know about the Millennium from the Scriptures?
Psalm 2:1-12 forecasts that God the Father will establish His Son as King over all the nations of the world.
Daniel 2:44 prophesies that this Messiah King will bring an end to all earthly kingdom and usher in His own perfect and just kingdom.
Isaiah 7:6-7 declares that He will be in the lineage of King David, and as the Prince of Peace, will usher in “world peace” for the first time in human history.
Jeremiah 23:5-8 further promises that this King, in the lineage of David, will usher in a world of peace and justice, but will bring the Jewish people from all over the world to dwell in a restored land of Israel.
Isaiah 2:2-4 tells us that in this future kingdom, Jerusalem will be the focal point of the world, and the coming King will reign here over all the nations of the world.
Isaiah 11:4-9 makes it clear this period will not only be a time of peace but also of absolute justice for all on the earth.
Isaiah 35:1-7 paints a picture of healing on the earth during this period of time, healing of both the land and all the people who enter in there.
Isaiah 49:14-26 promises the future King will deal with all of Israel’s enemies justly and restore the nation of Israel to their promised land.
Joel 2:26-27 adds to this the promise that the nation of Israel will never again be put to shame in the world.
Ezekiel 40-43 portrays the new, future Temple in Jerusalem in great detail. It will be the most magnificent Temple ever and will be indwelt by the God King-Priest Himself.
Daniel 7:18, among other Old Testament passages, seems to indicate that part of the population of the Millennium will be Old Testament saints, especially believing descendants of Abraham. That means they would be raised from the dead to enjoy the kingdom promised them.
Revelation 20:4 clearly spells out that martyred saints from the Tribulation will be raised from the dead and enter into the Millennium as well.
Revelation 3:21 is a record of Jesus promising church saints that they will rule and reign with Him in the Millennium.
Revelation 20:2-3, 7-8 prophesies that Satan will be confined and have no influence during this thousand years until the very end when he will be released to lead any who want to revolt against the God-King. The Millennium will begin with only believers and saints, but over time they will have children, who will each have to choose whether they are willing to put their trust in Jesus. Some will not, and will follow after Satan at the end of the Millennium.
Revelation 20:7-10 tells us that at the very end of the Millennium Jesus will defeat and banish Satan forever.
These are but a sampling of the hundreds of passages that speak to this aspect of prophecy.
To put the Millennium in perspective, it is promised to be a thousand-year period that will follow the Great Tribulation. This will be a time marked by Christ being the Priest-King, ruling in a new Jerusalem from a new Temple, and will rule with love and justice over a world kingdom, over all the nations.