Paul wrote back to them saying, "Now we
beseech you, brethren, by the coming of our
Lord Jesus Christ, and by our gathering
together unto him, (that's the Rapture),
That ye be not soon shaken in mind, or be
troubled, neither by spirit, nor by word, nor
by letter as from us, as that the day of Christ
is at hand. Let no man deceive you by any
means:" 2 Thessalonians 2:1-3