That’s true enough, not everyone who claims to be is (particularly on that day!), but even in Sodom there was found a believer, of course he was told to grab his family and get out of Dodge, but I digress. There are believers in the Roman Catholic Church and we should therefore be respectful in discussing doctrinal differences. If it turns out you are having that discussion with a non-believer, God may well use you in some small way to grow His kingdom.
I appreciate your thoughts and thank you for responding.