The 9th states
When you are doubtful, you shall
assume that the act of commission or
omission you’re in doubt about is not
sinful, and you shall proceed without
dread of sin.
But when I watched a video where a priest explains if you don’t know if something is grave or not, and you do it anyway then you commit a mortal sin because you are willing to offend God. I am scrupulous, so I am scared because I did as it states, I did something even thought I didn’t know if it was a sin or not. How do I know when I should abide to the 9th commandment for the scrupulous? Here is the link for the ten commandments for the scrupulous: mission.liguori.org/newsletters/pdf_archive/Ten_Commandments_for_the_Scrupulous_2013.pdf They have a description for each commandment.