Sadly, I think that the majority of the misunderstanding of the Church by our separated brethren stems from their lack of reception of the Holy Eucharist. Again:
Jesus said to them: Amen, amen I say unto you: Except you eat the flesh of the Son of man, and drink his blood, you shall not have life in you. [55] He that eateth my flesh, and drinketh my blood, hath everlasting life: and I will raise him up in the last day.
This is not meant to save you. This is not how one receives Jesus. One must be born again of the Spirit. Christ’s Spirit must come and live within you. And it is not until this happens that you will have the discernment and wisdom to correctly interpret scripture. I am not saying that to brag...I am just stating a fact. There is such a misunderstanding, deliberate or not, of scripture among Catholics.
I grew up Baptist and it is called the Lord’s Supper. Crackers and grape juice were used...not even real wine. But I digress....since I was not a member of that Baptist church I did not take the Lord’s Supper...it was restricted to church members only. See where I am going with this?
It never bothered me at all since I knew that Jesus lived in my heart and no church building or church membership or crackers and juice could ever change that. And, in fact, I attend no church at all and have never done any of the ritualistic things associated with religion. But Jesus lives inside of me and I’ve no doubt about that at all.
This is what all of you are missing...a changed heart...a spiritual birth that once it occurs will leave you in no doubt that it has. God will reveal Himself to you if you are in earnest and are willing to have Him and Him alone. And once He has entered your heart, the Holy Spirit begins the task of teaching you discernment and gives you wisdom....not man’s wisdom, but God’s wisdom.