Board Thread:Skyrim/@comment-11618741-20150726035340/@comment-68.190.118.231-20150726074707

From the uesp page:

 prid 3C57D

 resurrect(This will resurrect Paarthurnax)

 resetQuest MQPaarthurnax (This will reset the quest that asked you to kill Paarthurnax)

 Not sure what this will make the Blades do however