He rubbed the magic lamp to summon the 'genie'.
(..) off the street. Why not just throw them in an incinerator? Destroy them. Well, that would only destroy the vessel. Sometimes it's better to keep the genie in the bottle. Say, is the, uh, Annabelle doll here? Right this way. Yeah. - You said she's a conduit? - That's right. (..)2013 The Conjuring