Ofertories or Offertories: How To spell?
The word Ofertories is misspelled against Offertories, which is plural of "Offertory"
Offertories has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings O & ertories which should not be misspelled with single 'F'
Wrong Spelling:  O-f-ertories  Correct Spelling:  O-ff-ertories 
Find more incorrect spellings of Offertories to spell right way.