Maybe I am seeing these paragraphs through a tinted lens but it seems as though they validate what I already assumed. That if I witness and spread the truth and those people who do not accept the truth as Jesus taught it they are still held accountable even though they refuse to accept it as truth just maybe not held to the mortal culpability.
CCC 1858 Grave matter is specified by the Ten Commandments, corresponding to the answer of Jesus to the rich young man: " Do not kill, Do not commit adultery, Do not steal, Do not bear false witness, Do not defraud, Honor your father and your mother." The gravity of sins is more or less great: murder is more grave than theft. One must also take into account who is wronged: violence against parents is in itself graver than violence against a stranger.
Maybe the whole unintentional ignorance and full knowledge part is what I am confused about. Being ignorant of scripture and ignorant of Catholic teachings reminds me of 2nd Tim where the verse speaks of the ignorant twisting scripture to their own destruction…I think those folks twisting scripture were ignorant of them being ignorant but were still culpable enough to be twisting it to their “destruction” which seems to be implying they are held accountable for laws they are not accepting and maybe not even aware of.
Example: As a Christian most of us believe killing an unborn child is murder…there are some Christians which honestly think they can terminate an unborn life if they do it before the 3rd or 4th month…the fact that they have convinced themselves it is ok doesn’t change the fact they murdered an innocent child…their ignorance of this seems to be (in your logic) ok as long as they are unintentionally ignorant and in their own heart (ok in their conscience with terminating a fetus). This concept just doesn’t seem right!