the top line of my resume is "Rev. Michael Hollinger."
I agree with other posters that this is not a desirable thing to put right at the top of your resume. It will get you passed over for positions for which you would otherwise be considered.
but my real love is my "weekend job" as an ordained clergyman
I've got a stack of resumes in front of me right now.
Here's a fellow with an 'additional' section that list "Team Captain, Podunk Marathon" and "Secretary, Irish Music Society".
Here's another guy with a 'Community Support and Interests" section. He does Yoga and rides a bike 50+ miles a week. He's a Deacon in his church.
Here's a candidate with an 'Additional' section that lists 'Team Captain, Podunk United Rugby Club'.
I see 'additional' sections all the time, and I like them. It gives me a little more of a picture of the whole person. As a resume reviewer it's all well and good to screen resumes looking for that candidate who has 15 years of Ruby on Rails and five years of iOS 5 experience. But it's still interesting to see just a glimpse of who the person really is.
Just a bit of 'additional' gives your resume a hook. 'Let's see, I remember, there was an F# guy who was President of his chess club".
In your case, your religious activities are a very important part of who you are. You don't want to be hired at a place who would find this part of you distracting (and yes, it's not legal in most places for the employer to consider your religion, and we hope everyone follows this principle.)
So add your title and part time position as 'Community Service' at the bottom of your resume. Don't make a big deal about it, but it will be best for both you and your potential employers for this activity to be disclosed.