A Jedi was a member of the Jedi Order,
who
studied, served and used the mystical
energies
of the Force; usually, the light side of
the
Force. The weapon of the Jedi was the
lightsaber, a weapon with a blade made
of
pure energy. The Jedi fought for peace
and
justice in the Galactic Republic, usually
against
their mortal enemies, the Sith and Dark
Jedi,
who studied the dark side of the Force.