Why is God going to release Satan after the 1,000 years (at the end of the Millennium, Rev. 20:7-9)?
Satan will once again be free to deceive the nations. Jesus allows the “snake” back in the garden to reveal man’s heart and God’s justice in judgment. God demonstrates the justice of His eternal judgments by showing that rehabilitation will not occur and that men rebel even in an ideal environment because they love sin. Men will not be able to blame their sin on their difficult circumstances. God will openly manifest the truth about the depth of human sin (called the mystery of lawlessness in 2 Thes. 2:7) and about Satan as being incurably evil. Satan deceives the nations, revealing that he was not rehabilitated or changed.