They look to Mary for salvation. They pray to dead people. They follow men whom they believe to be "another Christ." They insist their own good words are required for justification since Christ's work on their behalf is not enough.
The RCC's heresies are exposed by reading the Bible. No wonder so few of them covet it.
“Roman Catholics believe the truth of the Gospel is heresy”
Not true.
“They look to Mary for salvation”
Not true
“They insist their own good words (did you by any chance actually mean ‘works’?)are required for justification since Christ’s work on their behalf is not enough”.
Not true.