The word “millennium,” although not found in the Bible, has become a common term in Christianity. Verses 2-7 of Revelation 20 mention the words “thousand years” six times. The word “millennium” comes from the Latin “mille anni” found in the Latin Vulgate of Revelation 20 and means “thousand years.” Thus, the thousand years spoken of in Revelation 20 has come to be called the millennium. From these few verses in Revelation has come a controversy among Christians that has lasted for, well, millennia. There are three basic views concerning the millennium, which also happen to be views as to what will happen when Jesus Christ returns: premillennialism, postmillennialism, and amillennialism. There is also another view, full preterism, that says the return of Christ has already occurred and we are living in the aftermath. In this article, I will state what each of these positions believes, and then I will briefly point out which of these positions I believe is best supported by the Bible.