Perhaps there is something in the following statement, after all:
Unless I am convicted by scripture and plain reason – I do not accept the authority of the popes and councils, for they have contradicted each other – my conscience is captive to the Word of God. I cannot and I will not recant anything for to go against conscience is neither right nor safe. God help me. Amen .
This is off-topic, but I’d like to ask this person: how does he know the Bible is the Word of God?
Where has the Church gone back on a doctrine which it has held as certain?
The Church herself has not gone back on a doctrine it has held as certain, but certain members of the Church have. In this Limbo issue, there are several doctrines that are being called into question: that persons who die in Original Sin only are excluded from the Beatific Vision; that persons who have not been baptized by water or blood and are incapable of Baptism of Desire cannot be cleansed of Original Sin, etc.
And how is a doctrine certain if it has not been declared as such?
There are different degrees of certainty/infallibility in doctrine. One way to tell is how unanimous the Fathers and Doctors of the Church have been on that doctrine. Or how often or emphatically in history the popes have condemned the contrary errors.
The Orthodox appear to differ, and they were in union with the Catholic Church for one thousand years. If this matter was settled during that time, would it not be reflected in their teaching?
I’m sorry; I actually don’t know much about the Orthodox, so I don’t think I can very well answer questions contrasting Catholics to the Orthodox.
I have heard people say that baptism of desire only applies to catachumens, with everyone else being out of luck. Is this true?
Yes, there are some Catholics who say that, and I believe it is permitted for theological discussions to advocate such a position. But the position favored by the Church is that all those who make an act of supernatural faith and charity together with perfect contrition for actual sins committed are thereby “baptized” by desire. In other words, by infused faith, they explicitly believe those things which must be believed explicitly in order to be saved (I listed them in a previous post on this thread), they love God with infused charity and by this love will to do all those things necessary for salvation (which includes Baptism), and through that charity they also repent sincerely of the offenses they have committed against God.
Maria