Feeneyism

Feeneyism, also known as the Boston heresy, is a Christian theological concept associated with the Jesuit priest Leonard Feeney. Feeneyism advocates an interpretation of the dogma extra Ecclesiam nulla salus ("outside the Church there is no salvation") claiming that only Catholics who are baptised with water can go to heaven. Feeneyism's denial of the doctrines of baptism of desire and baptism of blood, is considered a heresy by the Catholic Church.

In 1949, the Supreme Congregation of the Holy Office produced a document to correct the errors of Feeney's interpretation. The document stated: "this dogma (extra Ecclesiam nulla salus) must be understood in that sense in which the Church itself understands it." After refusing to recant his claims, Leonard Feeney was excommunicated from the Catholic Church in 1953 by Pope Pius XII, although he later reconciled with the church in 1972, a few years before his death.