Sentence:  To me, citing the letter is a bit like the whole Dumbledore is gay thing. Sure, we have the <WSD>Word of God</WSD> [1] that he is but I prefer my evidence to come from the text. 
Meaning of the word marked with <WSD> tags:  The creator(s) of a media franchise and/or their extradiegetic revelations about plot, characters, etc.