Who says the teaching of LG 16 is not infallible? Unrepentant Feeneyites? SSPX schismatics?
Lumen Gentium 16, and the references to LG 16, will give any faithful Catholic all the guidance they need to know the mind of the bishops of Vatican II.
My advice is to simply ignore anyone who claims that they better understand the Catholic faith than the bishops that wrote Lumen Gentium. There are a lot of cafeteria Catholics that believe they are more faithful than the pope, and these dissenters are found among both the “progressives” and the “conservatives”. Don’t let their lack of faith disturb you.
LG 16 references the
**LETTER OF THE SACRED CONGREGATION OF THE HOLY OFFICE ** Given on August 8, 1949 explaining the true sense of Catholic doctrine that there is no salvation outside the Church.
This important Letter of the Holy Office is introduced by a letter of the Most Reverend Archbishop of Boston.
The Supreme Sacred Congregation of the Holy Office has examined again the problem of Father Leonard Feeney and St. Benedict Center. Having studied carefully the publications issued by the Center, and having considered all the circumstances of this case, the Sacred Congregation has ordered me to publish, in its entirety, the letter which the same Congregation sent me on the 8th of August, 1949. The Supreme Pontiff, His Holiness, Pope Pius XII, has given full approval to this decision. In due obedience, therefore, we publish, in its entirety, the Latin text of the letter as received from the Holy Office with an English translation of the same approved by the Holy See.
Given at Boston, Mass., the 4th day of September, 1952.
Walter J. Furlong, Chancellor
Richard J. Cushing, Archbishop of Boston…If you have never read this letter, now is the time.