Crazy dress and in Latin to boot

A cleric, presumably a priest, all dressed in black top to toe, wearing a 'cornered hat with tassel' is asked going into church what's on. He replies Mass. The Mass will be in Latin. He was asked why Latin and replies, "Because that is the mother tongue of the church". The questioner continues by pointing out that he is a member of the church and Latin is not his mother tongue to which the cleric replies, "it is a sacred language".

The chap was young and looked decidedly odd. Some days later a member or a religious congregation was overheard saying that there is every chance that the 'church' could well become a cult.