What Abp. Lefebvre said was wrong, it is rejected by the Fathers, St. Thomas and the Thomists, ALL the saints, and the Athanasian Creed. Unfortunately, since the 20th century that liberal teaching has spread to even traditionalist priest. Until it is condemned by the pope himself, the opinion is allowed. We can't call Karl Rahner nor Abp. Lefebvre heretics for both teaching the same thing. When a sane pope is finally sent by God he will decide the issue. Till then:
What Abp. Lefebvre said is rejected by ALL of tradition: the Fathers, St. Thomas and the Thomists, ALL the saints, and the Athanasian Creed. Those that have eyes to see, let them see.
Besides the Baltimore or Pius X catechisms, where else is this implicit faith thing found?
You won't find it in the 1891 original Baltimore catechism, and I don't know when and if it was ever later put in in the 20th century. The Pius X quote is not in the original in Italian, which is the only official catechism, since it was a local catechism in Rome printed in Italian.
AND regarding Pius X directly (not a catechism just named after Pius X!):
The Sacred Congregation of the Propagation of the Faith, under Pope St. Pius X, in 1907, in answer to a question as to whether Confucius could have been saved, wrote:
“It is not allowed to affirm that Confucius was saved.
Christians, when interrogated, must answer that those who die as infidels are damned”.Pope Eugene IV, Council of Florence, “Cantate Domino,” 1441, ex cathedra:
“The Holy Roman Church firmly believes,
professes and preaches that all those who are outside the Catholic Church, not only pagans but also Jєωs or heretics and schismatics, cannot share in eternal life and will go into the everlasting fire which was prepared for the devil and his angels, unless they are joined to the Church before the end of their lives; that the unity of this ecclesiastical body is of such importance that only those who abide in it do the Church’s sacraments contribute to salvation and do fasts, almsgiving and other works of piety and practices of the Christian militia productive of eternal rewards; and that nobody can be saved, no matter how much he has given away in alms and
even if he has shed blood in the name of Christ, unless he has persevered in the bosom and unity of the Catholic Church.”
Athanasian Creed
1. Whosoever will be saved, before all things it is necessary that he hold the Catholic faith;
2. Which faith except every one do keep whole and undefiled,
without doubt he shall perish everlastingly. 44. This is the catholic faith, which except a man believe faithfully he cannot be saved.
"Before their Baptism, certain Japanese were greatly troubled by a hateful scruple: that God did not appear merciful, because He had never made Himself known to the Japanese people before, especially that those who had not worshipped God were doomed to everlasting Hell. They grieve over the fate of their departed children, parents, and relatives;
so they ask if there is any way to free them by prayer from the eternal misery. And I am obligated to answer: there is absolutely none."Saint Francis Xavier