You misunderstood what I said. I am saying that you must know that what you are doing is directly contrary to God's word.
So if I believed with all my heart that strapping on a suicide vest and blowing up a daycare while screaming "Allahu Akhbar!!" was God's will, I would not be sinning as you defined?
On the contrary, I understood what you were saying perfectly well.
We can sin and not know it.
I know that puts Catholics in a real quandary because they are so fixated on having to confess each and every sin and that those which are unconfessed upon death either put the person in hell or purgatory.
Problem is, we can and do sin without out being aware. There is simply NO way possible to confess everything we did that we shouldn’t have done, or confess everything we should have done and didn’t do.
Sin is disobeying God, not just a list of do’s and don’t’s that we can check off. Jesus tells us in the beatitudes that it goes way beyond the action, right down to the intent of our heart. Since our very being is corrupted by sin, there is not a thing we can do with entirely pure motives or that is unstained by sin.
I know that throws a real monkey wrench in Catholic theology, but if they’d get a correct view on sin, they might see the real necessity of the death of Christ on the cross.