Extraterrestrials will return to the Earth to collect a few selected from Humans

Marshall Applewhite : religious leader
Applewhite believed in the ancient astronaut hypothesis, which claimed that extraterrestrials had visited humanity in the past and placed humans on earth and would return to collect a select few. Parts of this teaching bear similarities to the Reformed Christian concept of election, likely owing to Applewhite's Presbyterian upbringing. He often discussed extraterrestrials using phrases from Star Trek and stated that aliens communicated with him through the show. “The joy is that our Older Member in the Evolutionary Level Above Human (the “Kingdom of Heaven”) has made it clear to us that Hale-Bopp’s approach is the “marker” we’ve been waiting for - the time for the arrival of the spacecraft from the Level Above Human to take us home to “Their World” - in the literal Heavens. Our 22 years of classroom here on planet Earth is finally coming to conclusion -- “graduation” from the Human Evolutionary Level. We are happily prepared to leave “this world” and go with Ti’s crew.
Final exit: “last chance to evacuate Earth”
Applewhite convinced that a spaceship was waiting just beyond the comet, to rescue his followers, he ordered the suicides of 38 followers, who believed it all. The 38 followers, and Applewhite, were all found dead in a beautiful house in
San Diego in 1997.