When Carrie Underwood sang at the Grammy's, they did a show on her
skirt.  The last scene was of
butterflies and they flew off her skirt and up into the sky!  A
perfect symbol of the rapture!  When people
become born again, it can be symbolized as the butterfly coming out of
the caterpillar, and for the
butterflies to fly up into the air could be symbolic of the rapture!