What does Revelation 20:2 mean?

According to this verse, the angel with the key to the bottomless pit and a huge chain captures the Devil, Satan, and binds him for a thousand years. Three schools of thought differ on the interpretation of the thousand years.

Postmillennialism believes this is a utopian period brought about by the preaching of the gospel. They see the world as getting better in preparation for the thousand years and anticipate Christ's arrival to the earth at the end of the thousand years.

Amillennialism believes the thousand years are entirely figurative. They deny a literal reign of Christ on earth for a thousand years and regard His reign as taking place in the hearts of His people. Generally, they refer to the church as the kingdom.

Premillennialism believes the thousand years is a literal period in which Christ rules the world after He returns to earth and judges the Antichrist, the False Prophet, and the nations.

The fact that Satan is bound, rather than immediately destroyed, seems to be part of God's message in the end times. No matter how much evidence humanity is given, those who seek to reject God will always find an excuse. After a thousand years of peace and righteousness, humans will still choose to defy God. After this final demonstration of God's justice, Satan will be permanently and utterly defeated.