I was looking at a list of mortal sins, and one of the sins said:
**Heresy is the obstinate post-baptismal denial of some truth which must be believed with divine and catholic faith, or it is likewise an obstinate doubt concerning the same; **
So my first question is, can someone who hasn’t been baptised commit heresy?
My second question is about the three points of a mortal sin, its a grave matter, and committed with full knowledge and consent. Let me give an example, if someone doesn’t believe masterbation is a mortal sin, are they or aren’t they in breach of the second point, full knowledge? If someone doesn’t believe in God, are they in breach of full knowledge?
My third question involves Catholic dogma. I know de fide and fides ecclesiastica beliefs are Catholic dogma, but are sententia fidei proxima and theologica certa Catholic dogma?
My fourth question is a summary of the prior three. If someone who has been baptised denies a Catholic dogma, believing it is not a Catholic dogma, even if they’ve been shown it was, are they in breach of all three points of a mortal sin? And would it be wise to advise them you believe they are in a state of mortal sin for heresy?
I’m asking because I don’t want people to go to hell, and I want to be able to tell them they’re in a state of mortal sin if they are in a state of mortal sin. I recognize it’s hard to tell, but I wonder if its possible.