Quit often Protestants accused Catholics as developing doctrine. However, development of Doctrine also occur within Protestantism from the time of Reformation 1517 to the present.
So Protestants, next time when you accuse us of developing doctrine, look into your history. Your own doctrines were also developed.
[quote=From the Website]CONCLUSION.
Catholics are often accused by Protestants of consenting to the Development of Doctrine - that is, allowing new doctrines to be added to those established by the Apostles and Early Fathers of the Church. This is presented by Evangelical Protestants as one of the chief corruptions of Catholicism.
In fact, when Catholics have defined supposedly “new” doctrines like the Assumption, the doctrines have not normally been new at all, but have been held by the Church since the early centuries, yet not officially defined.
However, as we have seen, far from being the strongholds of an unchanging biblical faith, as they like to present themselves, it is the Protestant Churches which have been the ones with a malleable and changeable belief system. Doctrines held as central and biblically-based by one generation, have been completely overturned and replaced by the next - often with completely new and unhistoric beliefs. This is change of a completely different order of magnitude to any so-called “Development of Doctrine” in the Catholic Church.
Fundamentalist Protestant Churches claim to follow clear Biblical doctrines discerned through the guidance of the Holy Spirit. An inescapable conclusion must therefore be drawn - either the Bible and the Holy Spirit have changed their view on these matters, which is impossible, or these Protestant Churches have been seriously and fundamentally misled on basic matters of doctrine.
In other words, if protestant “truths” are subject to such basic change, they cannot be truths.