Mysterium Fidei

On the Holy Eucharist

St. Paul VI1965-09-03Current

Read official document on Vatican.va ↗Return to library

Overview

Reaffirms Eucharistic sacrifice, Real Presence, transubstantiation, and worship while encouraging liturgical renewal faithful to doctrine.

Why This Document Matters

It is an essential doctrinal companion to Vatican II’s liturgical reform and later Eucharistic teaching.

Historical Context

Issued by St. Paul VI in 1965, this papal encyclical addresses the pastoral, doctrinal, or governing needs of its period while remaining part of the Church's continuing documentary tradition.

Authority and Status

Genre: Papal Encyclical
Authority class: Papal encyclical
Juridical force: Doctrinal and pastoral
Current status: Current
Promulgated: 1965-09-03

Authoritative papal teaching; the weight of individual statements depends on their wording, subject, continuity, and intent.

Key Points

Sacraments & LiturgyDoctrine & FaithEucharist

Major Themes

Sacraments & LiturgyDoctrine & FaithEucharist

Related CatholicG33k Resources

Official Text

Mysterium Fidei

The official document text is hosted by the Holy See. CatholicG33k provides contextual and educational material but does not reproduce the complete Vatican text here.

Read official document on Vatican.va ↗Source verified 2026-08-25 · Opens in a new tab