when do we find out chuck is god

Chuck is revealed to be God in the TV show Supernatural in Season 11, Episode 20, titled "Don't Call Me Shurley." However, there were many hints that Chuck was God since his introduction in Season 4, when he appeared as an author and prophet with the ability to predict events. The show's creator Eric Kripke knew early on that Chuck was God, and the character was originally introduced under the alias Carver Edlund. The revelation became official and explicit in Season 11, although Chuck's divine role was hinted at throughout the earlier seasons.