What is the Millennium?

 The Millennium is the one thousand year period during which Jesus Christ and the resurrected Saints will rule the world in peace, justice and equity.

It begins when Christ returns as King of Kings, and Lord of Lords, to establish the government (Kingdom) of God over all nations.

At the beginning of the Millennium, Satan is bound and the prophesied "times of refreshing" begin.

After the Millennium when all enemies have been put under Jesus' feet, and all things are made subject to Him, Christ then will deliver the Kingdom (government) to God the Father. (Revelation 20:1-6) (Acts 3:19-21) (Revelation 11:15) (1 Corinthians 15:24)