the church of emacs is a religion of freedom. it doesn't require celibacy, conversion of spouses, or even using emacs. IIUC it's enough to adore emacs :-) and to pursue a life of moral purity, avoiding possession by nonfree programs.
FWIW, more seriously, I've considered starting a local chapter of the church of emacs precisely to reinforce my philosophical/religious freedom when struggling against impositions of nonfree software by the government. it shouldn't be necessary in .br, because our constitution doesn't distinguish between philosophical and religious beliefs, but it might help elsewhere, and even locally. it may be advantageous to name a long-established church, even a humorous one, over making up your own, depending on how seriously the legal system takes religious freedom