One thing is the penitential prayer/rite…pasted below…
I confess to almighty God,
and to you, my brothers and sisters,
that I have sinned through my own fault,
in my thoughts and in my words,
in what I have done,
and in what I have failed to do;
and I ask blessed Mary, ever virgin, <-----This part is not necessary
all the angels and saints, <-----This part is not necessary either
and you, my brothers and sisters,
to pray for me to the Lord, our God amen .
I’ve never heard anything like this in any non catholic churches I’ve been to. It’s a very good thing for a large group of people to publicly acknowledge/confess their sins. It’s sets up a correct perspective of oneself before God, verbally recognizes ourselves as sinners in need of forgiveness and it’s Biblical.
I know that non catholics all understand these things but this prayer keeps that knowledge more at the forefront of our brains. It keeps us more humble before God and I think it’s one of the reasons I never hear a catholic say in reference to their sin…“it doesn’t matter because I’m already forgiven.”
Catholics just try harder not to sin, and I believe this prayer is part of the reason for that.