[BlatherNaut]

Bottom line: if this was a true, valid ecumenical council, then it is to be considered infallible.

So if a "true, valid ecumenical council" teaches that all the faithful must wear green shirts on earth day and sing hymns to Gaia, such a teaching must be considered infallible?

[piusv]

No, it would mean that it wasn’t a true valid ecumenical council.

[piusv]

Or that the authority promulgating such heresy would not be legitimate given the Holy Spirit protects the Church from teaching error.