After Christ returns, he’ll declare victory over His enemies, place Satan in captivity (the bottomless pit) and take His place as the just King and ruler over earth. He’ll reign from Jerusalem and with this, all prophecy regarding Israel that have not yet come into fruition, will be fulfilled.
Not only will Christ restore Israel and bring justice and peace to the earth, He will also heal the earth from the damage done by the curse that twisted our planet into something it was never meant to be. When God created our planet, there were no plagues or pestilence. There were no weeds, droughts or floods. Animals didn’t kill each other either – everything existed in perfect harmony and one being didn’t have to suffer or die to sustain another. God will restore the earth to what it had been. How amazing is that! And God, along with His saints, will reign over the earth for 1000 years.
Note that, in spite of the damage done by the curse being rolled back, people will still be able to sin. Sin will still be with us during this wonderful time. People who follow the rule of Jesus will be able to live the entire 1000 years. The Bible states that someone dying at 100 would be considered an infant. Death will come to those who defy God.
At the end of this 1000 years, God will release Satan for a short time. This is the sad thing about the human ‘condition’. In spite of having perfect health, prosperity and justice under the rule of Christ, many nations will still follow the devil and try to fight God. Once again this attempt to overthrow God will fail. This will end with the White Throne judgement during which God will rid the universe of all sin once and for all. After this, the new Heaven and earth will be created.