“They can un-decide it too. They have the authority given to them by HIM.”
“The Church had eating meat on Friday as a sin. They have undone that. Lent used to be FAR more rigorous than it is now. They DO have the authority to bind/loose, don’t they?”
In your above statements, you refer to the Catholic Church five times as “they”. I think you may have a misunderstanding of the what the Catholic Church is.
"They" is just a way of writing--probably not the best way.
I may have a misunderstanding of the Catholic Church? Maybe I do. I've been going to Mass on Sundays and holy days since I was a girl and daily Mass for the last 35 years. Perhaps I WASN'T listening to any of the sermons. You may be right.