Those of us who enjoy studying "eschatology" (Biblical Prophecy)
would expect this in the "End Times". The world is waiting for
a "Savior" - one will be provided as the Bible prophecies: The
True Savior for the Christians at an event called the Disappearance
or the Rapture while the world (non-Christians) will welcome
a false Messiah or anti-Christ!
All true Christians believe that Jesus - the King of Kings -
will return as He said - but differ on the timing.
For those of you who study such things: Evangelical Premillennial