Read Revelation 20:4-6. What are the righteous doing during the 1,000 years, and why is it important?

 During the millennium, the righteous will have an opportunity to observe firsthand God’s justice and love in how He has dealt with the sin problem. Who doesn’t have questions they would like to ask God about a lot of things? Now, during the millennium in heaven, the redeemed get to ask those questions. If a loved one or close friend is absent from heaven, the saved have the opportunity to understand God’s decisions more fully. In a new way, more forcefully than ever before, the redeemed will grasp God’s powerful attempts to save every person who has ever lived. They will realize anew that everyone who is lost has missed out on heaven because of their own personal rejection of Christ. Only then does God bring final judgment—the second death, which is eternal destruction—on the lost.

 Read Revelation 20:7-9. How do the 1,000 years conclude? What is the fate of Satan and his followers?

 For 1,000 years, Satan has had no one to tempt or deceive. He and his angels have been alone to reflect on the deadly consequences of sin. At the end of the millennium, the wicked dead are resurrected to face the judgment and receive their final reward (Rev. 20:5).

 Now Satan has a vast army of followers. Although Satan has suffered defeat after defeat in the great controversy, he is encouraged as he sees the huge throng of the lost. Not yet ready to end his rebellion, he goes out to deceive these “nations.” Satan inspires them to make one last great effort to overthrow God and set up their own kingdom. The term “Gog and Magog” is used to symbolize Satan and the unsaved of all ages. Satan and his followers surround “the camp of the saints and the beloved city” (Rev. 20:9, NKJV).

 At the close of the millennium, not only are all the wicked raised to life, but the Holy City, New Jerusalem, descends to earth from heaven (Rev. 21:2)! The saints have been living and reigning with Christ in the New Jerusalem for the millennium. Now, at the end of the 1,000 years, the city descends to earth along with God, Jesus, the angels, and all the redeemed. Everyone is present for the final battle of the great controversy. Sin is about to be eradicated once and for all!