Forum:Destiny Hero Diamond Dude and Swords of Revealing Light

If you activated Destiny Hero Diamond Dude's Effect and the top card was swords of revealing light thus sending it to the graveyard because it is a normal spell card. Then next turn you activated the effect of Diamond Dude will the swords of revealing light stay on your graveyard and still has it's effect activated or it will just stay in your graveyard and nothing happens? Please answer this because I really need to know.