Mijoy2:
Grave matter - could mean any relation to the ten commandments.
Knowledge — this one is a no-brainer. if we didn’t know it was a sin the discussion would be over
Full consent – if we knew it was a sin, by default, we consented when we commited it.
This makes ALL sin mortal. I don’t know how it can be arguesd other wise.
Hold it there! There is a clear distinction between mortal and venial sin. First, let me say that all sin, even venial, is a terrible catastrophe, but to confuse mortal and venial is not helpful at all.
Three things are necessary for a sin to be mortal, as you have correctly stated. But it is necessary to reflect on what these things mean.
Grave matter: JimG gave you some good distinctions. Everything that refers to the Ten Commandments MAY be grave matter, but not everything necessarily is. Take for example, the 7th Commandment, Thou shalt not steal. If you steal a valuable item, or if there are circumstances that make the stealing worse than it ordinarily would be, like sacrilege, it is grave matter. If you steal an insignificant, inexpensive item, say, a Bic pen, it is not grave matter. It’s a matter of common sense. You shouldn’t steal
anything, but some stealing is worse than other stealing.
Full knowledge: You must know
at the time you commit the sin that the act is sinful. If you find out later, you have not committed a sin. Many people are confused on this. Now, if you commit the same act again, after you’ve learned that it is sinful, you do have full knowledge and are responsible.
Full consent of the will: Here’s where you have a bit of an error. We don’t consent “by default.” Many things can diminish one’s consent - habit, fear, coercion, not being fully conscious or awake. Now, in ordinary circumstances, with ordinary people who have no psychological problems and don’t have somebody holding a gun to their heads, full consent is the usual thing. But you can
never assume that someone has fully consented to a sinful act. This is the essence of God’s command, “Judge not, lest you yourself be judged.” You can, of course, determine for yourself whether
you have consented, and that’s the essence of your examination of conscience.
Some people have trouble because they see mortal sin everywhere, where it really is not. This is called being scrupulous. Here is a link to the
Ten Commandments for the Scrupulous which may be helpful to someone in this situation. Bear in mind that not all these things will apply to the person who is not scrupulous, but they’re all good to think about.
Betsy