The amount of heresy in your ecclesial community or belief system is the difference between your ecclesial community’s doctrines/beliefs and the Catholic Doctrines/official teachings.
God built His one Church on the rock of Peter, meaning the office of Prime Minister of Christ’s Earthly Kingdom. Did Christ have to do this? No, of course not, but neither did He have to create you and me. Christ went on to say that the gates of Hell would never prevail against His Church built on the rock of Peter. He said He would be with His Church until the end of time. Christ would be with His Church (His Bride) and protect her from all error in teaching faith and morals to do something that Adam was meant to do and did not. Not surprisingly, we see Christ’s promise kept until this time, and will continue until the end of time. God’s Catholic Church with the office of Peter as visible head has never once taught error in faith and morals, and never will. Men can and have sinned in the Church, but the official teachings have never been in error, and if you believe Christ, they never will be in error. This is the Will of God that all men know Him and have the truth of Him.
All ecclesial communities started by men have done so by separating themselves in teaching from God’s Catholic Church. First of all, any separation that keeps us from being one in Christ is an error in teaching. Then, each teaching not in communion with the Catholic Church doctrine is in error. So, these ecclesial communities were founded on some teaching which originally came from God through His Catholic Church, and then mixed with some error to make it it’s own unique brand or set of beliefs. So, these ecclesial communities were formed with errors and so from the very beginning of these, the gates of Hell have prevailed to a lesser or greater extent depending on these errors. These man-made errant teachings have spread far and wide and have torn at the Body of Christ. This is intolerable and scandalous.
God’s one Church is the standard of truth on earth, and as the Holy Spirit inspired Scriptures teach, the Church with Peter as head is the pillar and foundation of the truth. The degree of heresy in your ecclesial community is measured by the amount of distance from Catholic Doctrine, which is a measure of the amount the gates of Hell have prevailed against your ecclesial community. To the degree that your ecclesial community shares doctrine with God’s Catholic Church, congratulations and keep coming closer, building on the truth you do have to come to the fullness of revealed truth in God’s one Catholic Church.
[FONT=Lucida Sans Unicode]This same admonition certainly applies to all those individuals who call themselves Catholic, but prefer to pick and choose which of God’s teachings they believe are correct. [/FONT]