Theology of Apostasy: Leo XIV’s “Open Sea” Modernism
Summary: VaticanNews.va (March 2, 2026) reports that antipope Leo XIV, addressing theologians from Puglia and Calabria, urged them to “navigate the open sea” and avoid the “temptation to turn backward,” promoting “doing theology together” in a “synodal style” to find “new forms and new languages” for Gospel proclamation. This speech is a quintessential expression of the Modernist apostasy condemned by St. Pius X in Lamentabili sane exitu, reducing theology to naturalistic humanism, omitting the social reign of Christ the King, and substituting the immutable depositum fidei with evolving human interpretations. The address epitomizes the post-conciliar “Church of the New Advent” in its rejection of Tradition and its embrace of immanentist, collegial, and inculturating errors.


