No Pope can ever fall into heresy

The Pope cannot fall into heresy. God absolutely prevents it.

It is not necessary to argue about each teaching of each Pope, and then to judge whether any teaching is heresy or any Pope is a heretic. The Pope is the Rock on which the Church is founded. If any Pope could fall into heresy, that would not be true.

No Pope can ever fall into heresy at all.
Never at any time. Never under any circumstances.

But as I said, it is not necessary to argue about each Pope and
each teaching of each Pope, as if our judgment could ever condemn
a Pope as a heretic.

Jesus taught that the Pope is the Rock on which the Church is founded.
Therefore, no Pope can fall into heresy AT ALL.

Antipopes are not included in this protection, since an antipope is not
a valid pope, but a false claimant to the papacy.

How does God prevent each and every valid Pope from falling into heresy?
By prevenient grace and actual grace. It is analogous to the way that God
prevented the Virgin Mary from falling into sin. She had free will, but she
was entirely unable to sin, due to grace.

Pope Honorius I did, as the Third Council of Constantinople proclaimed (with Pope Agatho and Leo II affirmed).

Benedicat Deus,
Latinitas

Thats not true or at least it’s not what the Church teaches. Popes cannot declare heresy to be the teaching of the church. What they privatly believe is not protected by infailability.

The Council did not declare Pope Honorius to be a heretic. Rather, they rebuked him, decades after his death, for not doing more to settle the question of one will or two for Christ. It was, at the time of Honorius, an open question. The Council itself infallibly defined the answer (two wills) only subsequent to the lifetime of Honorius.

It is also clear from Honorius’ letters that he himself did not teach, nor have a firm opinion, on the subject. He unfortunately counseled avoiding the controversy.

Papal infallibility protects teachings which meet certain conditions from error. What we are discussing here is whether a Pope can fall into heresy in his heart and mind.

The teaching of Christ is sufficient for me on this point: the Pope is the Rock on which the Church is founded. If any Pope could fall into heresy, he would not be the Rock of the Church.

If they claim it to be infallible, then no it can’t fall into heresy. That is to say, a Pope could not declare ex cathedra that Martin Luther was right or that Ganesha is to be prayed to at each Mass.

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