Your advice is appreciated!

The last "6" is by far the best of the lot.

Not to sure with the sepia, I think just plain old B&W would have been better.

A pity you did not use flash, generally speaking I believe flash is OK in churches, just not during the service.

If it was a definite no no, manual mode with auto ISO would have been good(if your camera allows it) to maintain decent apertures and shutter speeds, some of your pictures look a little soft and little noise would not have mattered too much.