The continued argument on this topic just doesn’t make any sense to me. With regards to the possibility of the Church changing its position on specific topics, such as homosexuality or women priests, those who believe in Catholic teachings are saying it can’t happen, and those who don’t believe keep arguing it will. The position of the former is guided by faith, and remains unconvincing to the latter. But, there is no need. Regardless of your opinion of the Catholic Church and whether or not it CAN change its teachings, it should be easy to see that it WON’T.
First, there are three options (really only one, but that requires knowledge from faith).
- The Catholic Church is guided by the Holy Spirit and cannot alter the deposit of faith.
- The Catholic Church is not guided by the Holy Spirit; but the Church leaders believe what the Church teaches, and believe it is.
- The Catholic Church is not guided by the Holy Spirit; the Church leaders know it and are self-serving frauds.
Let us now examine whether Church Doctrine faces the possibility of change in each case.
Case 1: By definition, if case 1 is true, then Church Doctrine cannot change and hence will not.
Case 2: Church Doctrine is not protected by the Holy Spirit, and hence could change. However, Church leaders believe they are incapable (not just not authorized, but actually incapable) of changing it. As long as they believe this, they will not change it. If they stop believing this, then they no longer believe what the Church teaches, and hence we are no longer in case 2 but have moved to case 3 (Unless of course they make a magisterial announcement saying that the Catholic Faith is false; this would prevent their becoming a fraud, but would not change Church Doctrine; it would instead effectively disband the faith.)
Case 3: If the Church leaders are self-serving frauds, Church Doctrine could be changed. If they change Church Doctrine, this will prove that the Catholic Church does not have the teaching authority it says it has, effectively disproving the Catholic Faith. Faith in a false religion is possible; faith in a false religion that itself proclaims it to be false is highly unlikely. The Catholic Church would largely collapse, and the remnants would not be the same. Any self-serving fraud in charge would not want this to happen, and thus we can be quite sure that no fraud would dare to change those things that the Church has already said can never be changed.
Thus, pure logic dictates that whether or not Church Doctrine is guarded by the Holy Spirit (and hence cannot change), it will not change, or in the very unlikely event it does, the Catholic Church will not exist anymore. Thus, I can state with certainty that the Catholic Church will not teach differently 100 years from now than it does today.