Michael Brooks
Catholicism is a division of Christianity, the world's largest religion, with an estimated 2.3 to 2.6 billion adherents in 2020. It is the largest Christian communion in the world, with over 1 billion members. Catholics place importance on the Church as an institution founded by Christ, and on the practice of baptism, which they believe is necessary for salvation. The Catholic Church is headed by the Pope, who derives his authority through Apostolic Succession, and its core beliefs include the divinity of Jesus, the Bible as the word of God, and the existence of original sin. While Catholics share some common beliefs with other Christians, they also hold unique views, such as praying to deceased saints and the Virgin Mary, and confessing sins to an earthly priest. Brazil has the highest Catholic population in the world, with estimates ranging from 123 million to 140 million or more.
| Characteristics | Values |
|---|---|
| Catholicism being the largest religion in the world | False |
| Largest religion in the world | Christianity |
| Second largest denomination of Christianity | Catholicism |
| Largest Christian denomination | Anglican Communion |
| Number of adherents of the Anglican Communion | 85 million |
| Number of adherents of Christianity | 2.3 billion or 31.2% of the world population in 2015; 2.3-2.6 billion in 2020 |
| Number of adherents of Catholicism | Half a billion |
| Country with the highest number of Catholics | Brazil, with 123 million or more |
| Countries with the highest number of Catholics | Mexico, the Philippines, the United States, Italy, France, Colombia, Poland, Spain, Argentina, and the Democratic Republic of the Congo |
| Country with the highest percentage of Catholics | Vatican City, with 100%; Timor-Leste, with more than 96% |
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What You'll Learn
Catholicism is a division of Christianity, the world's largest religion
Christianity is the world's largest religion, with an estimated 2.3 to 2.6 billion adherents in 2020, accounting for 31.2% of the total world population. Catholicism is a division of Christianity, with half a billion adherents worldwide, making it the largest Christian communion.
Catholicism holds that the Church, founded by Christ, is kept from doctrinal error by the presence and guidance of the Holy Spirit. The Church is headed by the Pope, who derives his authority through Apostolic Succession, as Peter was chosen to lead the Church. The primary statements of faith are the Nicene Creed and the Apostles' Creed, and the primary moral requirements are the Two Great Commandments: complete love of God and love of neighbour.
Catholics place significant importance on the seven sacraments, including the Eucharist and baptism, which they believe is necessary for salvation. They also believe in the Bible as the word of God and use the Ten Commandments as a moral and ethical compass. Catholics hold that Jesus is the son of God, that he was crucified around 33 CE, and that he rose from the dead and ascended into Heaven. They believe in the original sin of Adam and Eve and that all humans are sinners as a result.
While these basic beliefs are common among all variations of Christianity, Catholicism holds unique views. For example, Catholics value praying to deceased saints and the Virgin Mary, confessing sins to an earthly priest, and believing in Purgatory. The nations with the highest Catholic populations include Brazil, Mexico, the Philippines, the United States, Italy, France, Colombia, Poland, Spain, Argentina, and the Democratic Republic of the Congo.
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Brazil has the highest Catholic population
Catholicism is a division of Christianity, the largest religion in the world, with an estimated 2.3 to 2.6 billion adherents in 2020. The Roman Catholic Church is the largest Christian church within this group, with 1.39 billion members worldwide as of 2024.
Brazil has the highest number of Catholics in the world, with estimates ranging from 105.3 million to over 140 million. The country was colonized by Portugal in the 16th century, and the Church of Saints Cosme and Damião, the oldest church in Brazil, was built in 1535.
The CIA Factbook and the Pew Research Center, which provide data on the number of Catholics by country, have identified Brazil as the nation with the highest Catholic population. The high number of Catholics in Brazil can be attributed to the country's history of Portuguese colonization, which introduced and spread Catholicism in the region.
While Brazil has the highest number of Catholics, other countries have a higher percentage of Catholics in their populations. For example, Vatican City has the highest percentage of Catholics, with the religion practiced by all 800 of its citizens. Similarly, Timor-Leste has a Catholic population that comprises more than 96% of its total population, and San Marino has a Catholic population that makes up 90.5% of its citizens.
In summary, Brazil stands out globally for having the highest number of Catholics, reflecting the historical spread of Catholicism through colonization and the enduring presence of the religion in the country.
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Catholics believe Jesus is the son of God
Catholicism is the largest religious denomination of Christianity, which is the largest religion in the world. With an estimated 2.3 to 2.6 billion adherents in 2020, Christians make up 31.2% of the total world population of 7.3 billion.
Catholics believe that Jesus is the son of God. This is a common belief among Catholics, who also worship Jesus. The Nicene Creed, a primary statement of faith in the Catholic Church, includes the line: "We believe in one God, the Father, the Almighty, Maker of all that is, seen and unseen. We believe in one Lord, Jesus Christ, the only Son of God, eternally begotten of the Father, God from God, Light from Light, true God from true God, begotten, not made, consubstantial with one Being with the Father."
The belief that Jesus is the son of God is also supported by the Catechism of the Catholic Church, which states that in the Old Testament, "son of God" is a title given to angels, the Chosen People, the children of Israel, and their kings. This title signifies an adoptive sonship that establishes a relationship of intimacy between God and his creatures. However, some Catholics may differentiate between God and Jesus, reserving the title of God for the Father and perceiving Jesus as the Son.
The belief that Jesus is the son of God is further emphasized by the sacred scriptures, particularly during Jesus' Baptism and Transfiguration. On these occasions, the voice of the Father proclaimed, "This is my beloved son, with whom I am well pleased," revealing the mysterious meaning of Jesus' sonship. Additionally, when Jesus acknowledged himself as the "only Son of God," he affirmed his eternal preexistence.
While Catholics hold this belief, it is important to acknowledge that Christianity and its denominations, including Catholicism, are diverse and shaped by cultural and historical influences.
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Catholics pray to deceased saints
Catholicism is the largest religion in the world, with an estimated 2.3 to 2.6 billion adherents in 2020. Christians as a whole form the biggest religious group by some margin, with 2.3 billion adherents or 31.2% of the total world population.
Catholics believe that the saints can hear and respond to their prayers, and that these saints continue to be part of the communion of saints even after death. This belief is supported by passages in both the Old and New Testaments of the Bible, such as the book of Maccabees in the Old Testament, which mentions purgatory and states that "thus he made atonement for the dead that they might be absolved of their sin" (12:46). In the New Testament, Jesus implies that some sins may be forgiven or atoned for after death, stating that "whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come" (Matthew 12:32).
Catholics often pray to specific saints associated with particular concerns, professions, or circumstances. For example, St. Anthony is the patron saint of lost items, while St. Jude is known as the patron of desperate causes. Catholics may also pray to Mary, the Mother of Jesus Christ, who is revered as the greatest of all saints due to her exceptional virtues, unwavering faith, and pivotal role in the salvation narrative.
It is important to clarify that Catholics do not worship saints, as worship is reserved exclusively for God. Instead, they venerate the saints and ask for their intercession and guidance in their relationship with God. This practice of praying to saints is rooted in the historical tradition of the Catholic Church, dating back to its early days.
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The Pope leads the Catholic Church
Christianity is the largest religious group in the world, with an estimated 2.3 to 2.6 billion adherents in 2020. Among the various denominations of Christianity, Catholicism is the largest branch, with over 1 billion followers worldwide.
The Pope, as the Bishop of Rome, is the head of the Catholic Church and its central government, the Holy See. The Pope derives his authority through Apostolic Succession, as he is considered the successor of St. Peter, the first Pope, who was chosen by Jesus to be the head of the Apostles. The Pope is thus vested with supreme power of jurisdiction over the Catholic Church in matters of faith and morals, as well as in church discipline and government. He makes decisions on issues of faith and morality for Catholics worldwide, guiding the faithful through speeches, writings, and directives sent to the bishops who oversee dioceses globally.
The Pope resides in Vatican City, an ecclesiastical state surrounded by Rome. The Catholic Church traditionally covers the costs of the Pope's meals, housing, transport, security, healthcare, and other needs. The Pope has free access to Vatican medical services and a private pharmacy. The Pope's residence is usually the Vatican Palace, though Pope Francis (2013-2025) chose to live in a two-room apartment in the Domus Sanctae Marthae.
The Pope is elected by a conclave of cardinals, who seek a leader who can balance tradition with a clear vision for reform and global outreach. The current Pope, Pope Leo XIV (formerly Robert Francis Cardinal Prevost), was chosen in May 2025 following the death of Pope Francis. Pope Leo XIV is known for his theological depth, diplomatic skill, and pastoral heart, with a commitment to social justice, interfaith dialogue, and the spiritual renewal of the clergy.
The Pope's role has evolved over time, with changes made by the Second Vatican Council (1962-1965) that counterbalanced the emphasis on papal prerogatives while maintaining the view that the authority of the bishops is tied to that of the Pope as their head. The Pope has also contended with the cardinals and the Catholic Ecumenical Councils, which have at times challenged papal authority. Despite these challenges, the Pope remains the supreme authority in the Roman Catholic societal hierarchy.
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Frequently asked questions
No, Christianity is the largest religion in the world, with an estimated 2.3 to 2.6 billion adherents. Catholicism is a division of Christianity, which also includes other denominations such as the Eastern Orthodox Church and Protestant denominations.
Catholics hold several core beliefs that are common to Christianity, such as the divinity of Jesus and the Bible as the word of God. However, they also have unique beliefs and practices. For example, Catholics believe that baptism removes original sin and is necessary for salvation, while most other Christians view it as a symbolic act. They also pray to deceased saints and the Virgin Mary, confess their sins to priests, and believe in the existence of Purgatory.
Brazil has the highest number of Catholics, with estimates ranging from 123 million to 140 million or more. Other countries with significant Catholic populations include Mexico, the Philippines, the United States, Italy, France, Colombia, Poland, Spain, Argentina, and the Democratic Republic of the Congo.
Catholics place great importance on the Church as an institution founded by Christ. They believe that the Church is guided by the Holy Spirit and is the font of salvation for humanity. The Church administers the seven sacraments, including the Eucharist, which are considered "masterworks of God" in the new and everlasting covenant.
The Catholic Church is headed by the Pope, who derives his authority through Apostolic Succession, tracing back to Saint Peter, who is believed to have been chosen by Jesus to lead the Church. The Church uses penalties and censures to guide its members but does not have the power to revoke baptism or expel a member.
