mikeledes:
A priest suggested that the Catholic teaching on birth control is not infallible and can be changed. He claimed that the Catholic Church had changed its teachings before. One example was that the Church taught that sex within marriage was at most a venial sin. As proof of this he cited the work of a certain Rainer (I’m probably spelling his name wrong). Can someone please help me with this. How do I respond? What sources can I read on this topic?
Thanks
Dr. Germain Grisez and Fr. John Ford, S.J. have asserted that according to the teaching of Vatican II (cf.
Lumen Gentium: 25) there are three modes in which infallible doctrinal teaching can be presented by the Magisterium: by the Pope alone, by the Pope and Bishops assembled together in an Ecumenical Council, or by the College of Bishops (including the Pope as its head) even when they are dispersed throughout the world (ordinary universal magisterium). While they do not claim that
Humanae Vitae is in itself an
ex cathedra, infallible definition, Ford and Grisez maintain that the teaching which it contains is infallible and irreformable, by virtue of having been taught constantly and definitively, over a period of many centuries, by a consensus of Popes and Bishops around the world - a consensus which was virtually unanimous until the early 1960s. (cf. “Contraception and the Infallibility of the Ordinary Magisterium,”
Theological Studies, Vol. 39, No. 2, June 1978, pp. 258-312).
Fr. Ermegegildo Lio (a Vatican II
peritus) is a Professor of Moral Theology at the Pontifical Lateran University in Rome. He also asserts that the teaching of
Humanae Vitae is infallible. He maintains that
Humanae Vitae, art. 14, contains an
ex cathedra definition of the intrinsic immorality of contraception: that is, an exercise of papal infallibility as solemnly defined by Vatican Council I, in the Constitution
Pastor Aeternus. (cf.
Humanae Vitae e Infallibilità: il Concilio, Paolo VI e Giovanni Paolo II, by Ermenegildo Lio, O.F.M. Published in Vatican City, Libreria Editrice Vaticana, l986).
Thus, I think your priest is offering an opinion, which other fine Catholic theologians find erroneous.
See more here:
**HUMANAE VITAE AND INFALLIBITY **
Reviewed by Fr. Brian Harrison
rtforum.org/lt/lt12.html#II