In a moment [the smallest particle of time]
. . . .in the
twinkling of an eye [a fraction of
a second].

I Corinthians 15:52 "In a moment, in the
twinkling of an eye, at the last trump: for
the trumpet shall sound, and the dead shall
be raised incorruptible, and we shall be
changed.

To collect believers from all ages and from
all parts of the earth. They will be raised in-
corruptible and will be changed.