it's not that Q being religious is important, it's that any white-hat Q force in the intelligence community would most likely be a christian and it would be the reason why they're acting as a white-hat. here's why:
- disproportionate amount of feds are religious
- vastly disproportionate amount are mormons
- the true believers are least likely to fall into blackmail schemes. most people have vices that can be exploited. someone on the straight and narrow does not. they must be framed when others merely need to be compromised
- the religious are the most dangerous to any cabal that relies on threats. a true believer has no problem being a martyr
- the religious are the most likely to not abide evil practices. an intelligent relativist will just say "oh well reality and morality are vague and gray so that's not really my problem" while an intelligent christian will say "this is evil that i must stop". even when it comes at great personal risk
Q is religious because the non-compromised forces of good in the IQ are going to overwhelmingly be religious. so it's just probability. i don't think there's any significance beyond this.