 In "Return of the Jedi", Obi-Wan again appears to Luke after Yoda's death on Dagobah.Obi-Wan acknowledges that Darth Vader is indeed Luke's father, revealed by Vader himself in the previous film and confirmed by Yoda on his deathbed, and also reveals that Leia is Luke's twin sister.He urges Luke to confront and defeat Vader; Luke once more rejects his advice.