They would disagree with the take from the church-state era on what Christ gave the church prior to that.
The Catholic Church has existed prior to the New Testament. What I am telling you is that whatever the problems that the Church has had over the centuries it has stayed true to the teaching of Jesus that “this is My Body” “Unless you eat My Body and drink My Blood you will not have life in you.” The Jews of His day feared cannibalism and Jesus assured them that was not what He was telling them, and they still could not believe.