If one takes Mr. Dandy’s prophecy at face value, it’s possible to see that Jack actually
created Bod’s situation by killing Bod’s biological parents—had he not been orphaned as an infant, Bod wouldn’t have found his way to the graveyard, where he grew up between the living and the dead. The Jacks made assumptions about baby Bod and in doing so, they created their worst enemy. Sending these three Jacks to Hell and the ghouls will allow Bod to do away with the Jacks without killing them and stooping to their level. In this way, Bod can maintain his integrity and his sense that he’s doing the right thing.