Catholicism

Catholicism
source
Name	Catholicism
Caption	St. Peter's Basilica in Vatican City, a preeminent site.
Founder	Jesus Christ, with Saint Peter as the first Pope.
Origin	1st century, Judaea, Roman Empire.
Headquarters	Vatican City
Main classification	Christian
Scripture	Bible (Latin Vulgate, Douay–Rheims)
Theology	Catholic theology
Polity	Episcopal polity
Leader title	Pope
Leader name	Pope Francis
Area	Worldwide
Language	Ecclesiastical Latin, vernacular
Separated from	Judaism (1st century)
Separations	Eastern Orthodox Church (1054), Protestantism (16th century)
Number of followers	c. 1.3 billion

Catholicism. It is the largest Christian church, tracing its origins to the ministry of Jesus Christ and the apostolic leadership of Saint Peter. Governed by the Bishop of Rome, known as the Pope, its central administration is the Holy See in Vatican City. The faith is defined by its adherence to sacred tradition alongside the Bible, and its global community, or laity, participates in a sacramental life centered on the Eucharist.

Beliefs and doctrines

Core beliefs are summarized in the Nicene Creed, affirming one God in three persons: the Father, Son, and Holy Spirit. Central is the Incarnation, that Jesus Christ, the Son of God, became man, suffered under Pontius Pilate, was crucified, and rose from the dead for human salvation. The church teaches the Real Presence of Christ in the Eucharist and holds Marian doctrines like the Immaculate Conception and Assumption of Mary. Doctrinal authority rests with the Pope and the collective body of bishops in ecumenical councils, such as the First Council of Nicaea and the Second Vatican Council. Teachings on morality, social justice, and grace are elaborated in the Catechism of the Catholic Church.

Sacraments and liturgy

Seven sacraments, instituted by Christ, are channels of grace: Baptism, Confirmation, the Eucharist, Penance, the Anointing of the Sick, Holy Orders, and Matrimony. The Eucharist is the "source and summit" of Christian life, celebrated within the Mass. The principal liturgical rite is the Roman Rite, with its two forms: the Mass of Paul VI (Ordinary Form) and the Tridentine Mass (Extraordinary Form). Other sui iuris churches, like the Ukrainian Greek Catholic Church, celebrate the Divine Liturgy of Byzantine or other Eastern traditions. Liturgical language transitioned from Ecclesiastical Latin to vernacular languages after the Second Vatican Council.

History

Early growth occurred within the Roman Empire, despite periods of persecution under emperors like Nero and Diocletian. It was legalized by the Edict of Milan under Constantine the Great. The First Council of Nicaea (325) addressed the Arian controversy. The Great Schism of 1054 divided Christianity, separating the See of Rome from the Patriarch of Constantinople. Internal challenges led to the Avignon Papacy and the Western Schism. The Protestant Reformation, ignited by figures like Martin Luther and John Calvin, prompted the Counter-Reformation and the Council of Trent. The First Vatican Council defined papal infallibility, while the Second Vatican Council (1962–1965) initiated major modernizing reforms under Pope John XXIII and Pope Paul VI.

Church organization and leadership

The church is an episcopal polity led by the Pope, the successor of Saint Peter and Bishop of the Diocese of Rome. He governs the universal church with the assistance of the Roman Curia, including the Secretariat of State and the Dicastery for the Doctrine of the Faith. The collective body of bishops, in communion with the Pope, holds teaching authority. Geographically, the church is divided into particular churches, including Latin and Eastern Catholic Churches, which are organized into archdioceses and dioceses overseen by archbishops and bishops. Local parishes are led by pastors or priests. Religious orders, such as the Society of Jesus (Jesuits) and the Order of Saint Benedict, operate under their own statutes.

Demographics and distribution

With approximately 1.3 billion members, it is the world's largest religious group. The largest populations are in Brazil, Mexico, the Philippines, the United States, and Italy. While historically concentrated in Europe and the Americas, significant growth occurs in Sub-Saharan Africa and parts of Asia. The church administers through nearly 3,000 ecclesiastical circumscriptions worldwide. Demographic challenges include declining practice in secularized regions like Western Europe, contrasted with vibrant growth in nations like the Democratic Republic of the Congo and India. The Holy See maintains diplomatic relations with over 180 sovereign states.

Relations with other Christian traditions

Dialogue seeks reconciliation with the Eastern Orthodox Church, addressing historical divisions since the East–West Schism. Significant steps include the 1965 mutual lifting of anathemas by Pope Paul VI and Ecumenical Patriarch Athenagoras I. With Protestantism, ecumenical efforts followed the Second Vatican Council's decree Unitatis Redintegratio. The church engages in dialogue with communities like the Anglican Communion, the World Methodist Council, and the Lutheran World Federation, often through the Pontifical Council for Promoting Christian Unity. While full communion remains unrealized, collaborative work occurs on social issues and scripture study. The church does not recognize the holy orders of most Protestant communities.