Cubs Fan

Question: I don't understand why Voldemort needed the prophecy from the Department of Mysteries. Doesn't he already know that Harry can possibly kill him, since Harry conquered him on the night of James and Lily's murders?

Answer: When Voldemort originally attacked Harry, he was acting on information provided to him by Snape. But Snape's information was not complete, ergo why Voldemort lost his powers. He wants the prophecy in order to hear it in its entirety, because he believes it will give him the information he needs to kill Harry.

Cubs Fan