Revelation 20 describes a 1,000 year period in the future called 'The Millennium.' This period will occur after Christ's bodily return and after he has begun to rule. In many ways this 1,000 year period functions as a transitional period between the old heavens and earth and the new.
During this time Christ will reign and bring prosperity, yet, at the same time, there will still be sin on the earth. Satan will be bound in the abyss but people will still wrestle with flesh and temptation. Yet, the earth strangely will have 'regular' people and also those who have been resurrected and, thus, in their glorified state. This seems like such a surreal idea, but Christ returned in his glorified body after his resurrection and so will these believers described in verse 4. This verse explicitly describes only those who were martyred during the tribulation, but it is thought by many that it will include all believers who have come before this time. Since these people are already glorified, they will not struggle with temptation or sin.
At the end of this 1,000 year period, Satan will be allowed to return to earth and rally people against Jesus. This will lead to a massive battle which seems to end in a moment. Christ will once again reveal his power and destroy the armies and Satan with fire from heaven. Then the final judgment will take place. All who have not placed their faith in Christ will be judged at the "great white throne." This future reality may seem like a sci-fi movie, but Christ's return, rule, and judgment are anything but. As we consider Christ as king and judge, it should impact the way we live today.
Question of the day: How can you further conform your life to the commands of Christ the king?
Father God, help me to submit to your Son's rule over my life. Help me to conform my life to your will and your ways. Thank you that Christ will return and make everything right but until then help me to seek your glory and fame. Amen.