From the earliest centuries of the Church, councils have been called to defend the faith, clarify doctrine, and preserve unity among the faithful. Rooted in the guidance of the Holy Ghost, these solemn gatherings such as Nicaea, Trent, and Vatican I stand as pillars of Catholic tradition. They defined dogma, condemned heresy, and handed down teachings that safeguarded the integrity of the faith across generations. For Traditional Catholics, these councils are not relics of the past, but living witnesses to the Church’s unchanging mission: to guard and proclaim the truth of Christ in every age.