Satan is bound for 1000 years to prevent him from deceiving the nations. Believers will reign with Christ during this time. After 1000 years, Satan will be released and deceive the nations for one final rebellion, which will prove mankind is still prone to sin without God. God will destroy this rebellion with fire from heaven, and Satan will be thrown into the lake of fire. The millennium kingdom establishes God's ultimate authority and that he is sovereign over all, including Satan.