How should he behave, what is the proper behaviour, what may he do differently from a catholic?
So I was wondering about the coming Christmas Mass my agnostic friend will attend with me.
What advices could I provide? Do not take the Eucharist ist clear, but there are other things i am unsure about:
Should he sign (cross) himself with holy water?
Should he sign himself during the introductionary rite?
Should he genuflect during consacration?
Maybe other things come to your minds?