From BBC News:

The force is strong among a group of West Yorkshire parishioners who held a special service on Sunday to celebrate the release of Star Wars Episode III.

…

“We wanted a special service to bring these themes together and celebrate the victory of good over evil,” said the Reverend Paul Walker.

As long as they watched the film
Also:

The service also included a hymn sung to the John Williams Star Wars theme.

Apparently it went:

dum DUM dum de de DUM DUM dum de de DUM DUM ooh god is great

Although I can’t seem to get the image of a cloned-stormtrooper mass choir out of my head. Can’t think why…