But tiggy, the Greek Orthodox church is a Christian church.
Anyway, the whole religion thing is clearly a red herring. I'm glad people here are taking the view that the jury wasn't being stupid, and that some of their questions are quite sensible. And in cases where they weren't sensible, I agree with Xenia that it might simply be the case that one juror got hold of the wrong end of the stick, so the jury asked for clarification to shut him/her up.
I think the jury were understandably confused. Neither the prosecution nor the defence presented a convincing case. Normally when that happens, the jury has to find for the defendant, but I can see that in this case - where the defendant had already admitted that she'd taken the points for her husband - they must have thought that that didn't seem quite right. Asking what "reasonable doubt" means is an entirely sensible thing to do in that case. The judge may say that the words are common English words but I'm sure philosophers could argue for hours about exactly what we mean by "reasonable".
There's a horrible article in the Mail (where else) by Melanie Phillips (who else) attacking the "stupidity and ignorance" of the jury. It seems particularly unfair as they're unable to answer back.