Demonic Possession for Power, Angels (including Fallen Ones) Have Spiritual Gifts That Can Enhance a Human Being's Gifts + The Big Bad Boys, Human Hosts Usually Only Live For Around 5 Years and Are Then Destroyed by the Demon + Shapeshifters
Jessie's Father Was Not in the System, Even Though There's a Bloodline Connection + Jessie's Mother Went Through the Program, She Was Broken and then Endured Many Years of Gaslighting on Top of That i.e. Saying She Must Have Imagined it all