The Parable of the Faithful Servant ( or Parable of the Door Keeper ) is a parable of Jesus written in the New Testament in Matthew 24:42 -51 , Mark 13:34 -37 , and Luke 12:35 -48 . The Parable of the Faithful Servant ( or Parable of the Door Keeper ) is a parable of Jesus found in three out of the four Canonical gospels in the New Testament .