Weddingbee boards

I feel slightly lame that I haven't been able to figure out the answer to this question (being a Legal Bee myself), but I imagine it's not a common dilemma.  Hopefully one of you ladies can help.

FI and I are of the Christian faith but don't attend church regularly and aren't close with any ministers.  We don't want to rent a random officiant, which would be very impersonal for us, so one idea we have is to ask a family friend who is a Superior Court judge to officiate our ceremony (at a venue - not a courthouse wedding).

So my question is, since he would be officiating in his capacity as a judge (as that's what gives him the authority to perform the marriage in the first place), to what extent, if any, can I incorporate religion into the ceremony?  This wouldn't necessarily involve him referencing God or religion (though it might, if he's allowed to do so) - I'm talking along the lines of having someone else do some religious readings during the ceremony.  Does this pose any problems considering his position as a member of the bench?  I could just ask him about this, but frankly I don't want to sound stupid!

(We're in California, btw.)  Thanks, guys!

Sweet, thanks guys!