I found a very interesting thing: the title of the episode 6x07 will be "The Great Red Dragon."
Maybe some of you have already figured out the crux of the matter, but for those who had no idea what I'm talking about, I'll try to explain everything.
From what we could tell, Red John is not a believer. Not in the traditional sense, at least. But he could have his own conception of religion and it could be the same as William Blake; this would also explain the frequent quotations from the poem "The Tyger".
"The great red dragon" of the title that I mentioned is indeed the dragon that appears in the book of Revelation. In the same book there is the famous number of the beast, which in this case maybe would not be so random in the sixth season premiere.
But what does William Blake have to do with all this stuff? Well, Blake was also a painter and he has painted "The Great Red Dragon Paintings" (you could find it on wikipedia).
Now, I'm not an expert on Blake, but just reading the wikipedia article about him, we can get an idea of its strange conception of religiosity.
I believe these are links rather concrete and then Red John may have been totally charmed by William Blake's philosophy, so he started his activity, which is not limited only to the serial killings, but also to put in place a mission of "love and enlightenment".
Another detail: the book of Revelation is attributed to John, the apostle.
So maybe the choice of the name "Red John" comes from here.
If so, the "Apocalypse" began when Patrick has got the list of the seven suspects and has started the final challenge has started. So Red John will likely try to complete his plan, whatever it is.
And it may be that his next victims, starting from Partridge, may symbolize some other influential figure in in the Apocalypse of John.
There is also another interesting detail, the description of the great red dragon in the biblical text: "And behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads."
"Seven heads"... seven suspects.
Now I strongly hope that Red John has not "transformed" Lisbon in the "Woman clothed in Sun"... because this would mean that now Lisbon is pregnant by Red John.
And I think Haffner could be the one in love with Teresa, so I chose his picture for this theory. But it could be each of the suspects.
