Law was on the books from 1967 to at least 1983…

Historical Tidbit: ‘Pope’ Paul VI permitted active Catholic Participation in Eastern Orthodox Masses

About a month ago, we published an article demonstrating that the Catholic Church teaches that she is infallible not only in her dogmas but also in her universal laws and sacramental rites — not in the sense that these could never be changed, but rather, that they could never be in themselves impious, heretical, sacrilegious, or otherwise harmful.

In his magnificent encyclical letter on the Mystical Body of Christ, Pope Pius XII taught this explicitly:

Certainly the loving Mother [the Church] is spotless in the Sacraments, by which she gives birth to and nourishes her children; in the faith which she has always preserved inviolate; in her sacred laws imposed on all; in the evangelical counsels which she recommends; in those heavenly gifts and extraordinary graces through which, with inexhaustible fecundity she generates hosts of martyrs, virgins and confessors.