I think it’s respectful to capitalise the Mass as the sacrament where Our Lord is received…just as I rarely don’t fail to write pronouns and possessives connected with God or Jesus or The Holy Spirit with capitals., e.g. Jesus said to His mother.
In England however the upper classes or the social climbers have an irritating habit of using a long a in the way they say mass , so that it inevitably comes out like MARSE.It can’t be criticised too much, the dictionary endorses both a long and short a -but I don’t think you would have been right saying meeesa with e’s ad infinitum, but again who is to say.It certainly became a little too much for me, prole that I am and because I’d never heard so many people want to keep using it…pronunciation,dear me.
Does anyone in the states say Marse ?