Mastema (Hebrew: מַשְׂטֵמָה Masṭēmā; Ge'ez: መሰቴማ Mesetēma), Mastemat, or Mansemat,[1][2] is the demon or angel who appears in the Book of Jubilees. He pleads with God to permit the spirits of the dead Nephilim to remain on Earth, so that they can corrupt and lead men astray prior to judgement.
