
The Roman Catholic Church traces its origins to Jesus Christ and the Apostles in Roman-occupied Jewish Palestine around 30 CE. The belief that Jesus established his disciple, St. Peter, as the first pope of the church is based on Matthew 16:18, where Jesus says, And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it. While Jesus was born, lived, and died a Jew, some consider him to be a Catholic Christian by faith. The term Catholic itself was used to refer to followers of the Nicene Creed, which became the official state religion of the Roman Empire in 380 CE under Emperor Theodosius I. This event marked the beginning of the Roman Catholic Church as an institution, and it gradually developed a sophisticated theology and organizational structure led by the Pope.
| Characteristics | Values |
|---|---|
| Jesus' religious identity | Jesus was born, lived, and died as a Jew. |
| Jesus' relationship with the Roman Empire | Jesus was executed by the Romans and was considered guilty of blasphemy by many Jewish people. |
| Catholicism's relationship with the Roman Empire | Catholicism became the official religion of the Roman Empire in 380 C.E. |
| Catholicism's relationship with the Roman state religion | The Roman state religion was defined by the Council of Nicea, which established Nicene Christianity as the official religion of the Roman Empire. |
| The role of the Apostles | The Apostles provided the beginning structure for the early Christian Church, which would later become the Roman Catholic Church. |
| The role of St. Peter | St. Peter, one of Jesus' disciples, became an influential leader in the Jewish Christian movement and is considered by some to be the first pope. |
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What You'll Learn

Jesus was Jewish, not Catholic
Jesus was a Jew in both the ethnic and religious senses of the word. He was born and raised Jewish, and was steeped in the Jewish Scriptures. He went to the synagogue on the Sabbath day, and quoted from the Old Testament book of Deuteronomy during his temptations in the desert.
Jesus came to complete the Jewish religion by creating a Church that would serve as its fulfillment and be open to people of all races, not just ethnic Jews. This belief is supported by Jesus' words in Matthew 5:17: "Do not think that I have come to abolish the law or the prophets. I have come not to abolish but to fulfill."
The followers of Christ viewed themselves as a reform movement within Judaism, and continued to follow many Jewish laws. However, they also believed that Jesus was the Messiah (Christ) whom the prophets had long foretold, and as such, they embraced the new, completed form of Judaism, or Christianity.
The term "Catholic" was first applied to the Church by Ignatius of Antioch around 100 A.D. It comes from the Greek word "kataholos", meaning "universal". This term was chosen to reflect the belief that salvation was meant for all people, not just ethnic Jews.
The Roman Empire legally recognized Pauline Christianity as a valid religion in 313 C.E. and in 380 C.E., Roman Catholicism became the official religion of the empire. During the following 1,000 years, Catholics were the only people recognized as Christians.
Therefore, while Jesus was Jewish and lived before the time of the official recognition of Catholicism, his teachings and the formation of the early Christian Church laid the foundation for the development of Catholicism as we know it today.
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The Roman Catholic Church was established by Christ
The Roman Catholic Church is one of the oldest and largest branches of Christianity, with about 1.4 billion followers worldwide. It maintains that it was established by Jesus Christ when he gave direction to the Apostle Peter as the head of the church, making him the first pope. This belief is based on Matthew 16:18, where Jesus Christ said to Peter:
> "And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it."
After the ascension of Jesus Christ, his apostles began to spread the gospel and make disciples, providing the initial structure for the early Christian Church. One of Jesus' 12 disciples, Simon Peter, became an influential leader in the Jewish Christian movement. Later, leadership was likely taken over by James, Jesus' brother. These followers of Christ viewed themselves as a reform movement within Judaism, continuing to follow many Jewish laws.
The basic structure of the Catholic Church was in place by 200 C.E. under the leadership of Irenaeus, bishop of Lyon. A system of governance of regional branches under absolute direction from Rome was established. However, it is difficult to separate the initial stages of the Roman Catholic Church from that of the early Christian church. The official beginning of the Roman Catholic Church is often considered to have occurred in 590 C.E. with Pope Gregory I, marking the consolidation of lands controlled by the pope's authority into what became known as the Papal States.
Christianity was legalised in the Roman Empire in 313 C.E. by Emperor Constantine I, and in 380 C.E., it became the state religion under Emperor Theodosius. During the following 1,000 years, Catholics were the only recognised Christians. In 1054 C.E., a formal split occurred between the Roman Catholic and Eastern Orthodox churches.
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The Catholic Church was recognised in 380 C.E
The concept of the Catholic Church as a distinct entity from other Christian groups was first referenced in a letter from Saint Ignatius of Antioch to the Smyrnaeans, circa 110 AD. In the letter, Saint Ignatius refers to the "universal Church", from the Greek "katholike ekklesia". The name "Catholic Church" was used to distinguish the group from other factions who also called themselves "the church".
In 313 C.E., the Roman Empire legally recognised Pauline Christianity as a valid religion under the Edict of Milan, issued by Emperor Constantine I. This marked a significant shift as Christianity was legalised and persecutions of Christians were lessened.
Then, in 380 C.E., the Catholic Church was officially recognised as the state religion of the Roman Empire under Emperor Theodosius I. This recognition was established through the Edict of Thessalonica, which affirmed the Nicene Christianity defined by the Council of Nicaea as the official religion of the Empire. The Edict of Thessalonica reserved the title of "Catholic Christians" for followers of the Nicene creed, while those who followed other beliefs were branded as heretics.
The recognition of the Catholic Church as the state religion had far-reaching implications. For the next 1,000 years, Catholics were the only people recognised as Christians, and Catholic orthodoxy became closely intertwined with imperial power. This period also witnessed the emergence of the basic structure of the Catholic Church, with a system of governance of regional branches under the absolute direction of Rome.
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Jesus was considered guilty of blasphemy
Catholicism did not exist in Jesus's time, as the Roman Catholic Church was established after Jesus's death. The Christian movement began with Jesus's apostles, who spread the gospel and made disciples, providing the initial structure for the early Christian Church.
Darrell Bock suggests that there was also a secondary element of "cultural blasphemy" in Jesus's actions. This included speaking and acting against God's appointed leaders in Israel. Jesus's climactic declaration in Matthew 26:64 was directed against the members of the Sanhedrin, over whom he claimed ultimate sovereignty.
Jesus's claim to be the Messiah, the Son of God, and the Coming Son of Man was also considered blasphemous by his opponents. They believed that only God had the authority to judge the world. Jesus's application of certain biblical passages to himself, such as Daniel 7:13 and Psalm 110:1, further provoked their indignation.
Overall, Jesus's teachings and actions were seen as a threat to the religious and political authorities of his time, leading to his condemnation and death sentence.
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The Catholic Church is the largest branch of Christianity
Catholicism is the largest branch of Christianity, with 1.27 to 1.41 billion baptised Catholics worldwide as of 2025. This accounts for about 50% of all Christians, making it the second-largest religious body in the world after Sunni Islam. The Catholic Church, also known as the Roman Catholic Church, is among the world's oldest and largest international institutions. It has played a prominent role in the history and development of Western civilisation.
The Catholic Church consists of 24 autonomous churches, including the Latin Church and 23 Eastern Catholic Churches, comprising almost 3,500 dioceses and eparchies around the world. Each of these is overseen by one or more bishops. The Pope, who is the bishop of Rome, is the chief pastor of the church. The core beliefs of Catholicism are found in the Nicene Creed. The Catholic Church teaches that it is the one, holy, Catholic, and apostolic church founded by Jesus Christ in his Great Commission, that its bishops are the successors of Christ's apostles, and that the Pope is the successor of Saint Peter, upon whom primacy was conferred by Jesus Christ.
The Catholic Church was established by Christ when he gave direction to the Apostle Peter as the head of the church, making him the first Pope. This belief is based on Matthew 16:18, when Jesus Christ said to Peter: "And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it." The official beginning of the Roman Catholic Church occurred in 590 CE, with Pope Gregory I. This marked the consolidation of lands controlled by the authority of the Pope, and thus the church's power, into what would later be known as "the Papal States."
The growth of the Catholic Church can be attributed to several factors, including its message, its role as the root from which all other Christian denominations have branched off, and its historical and cultural influence. The Catholic Church has had a significant impact on the religious, cultural, and political landscapes throughout history, particularly in the development of Western civilisation.
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Frequently asked questions
Jesus was born and died a Jew. However, he began a protest movement within Judaism, and some sources consider him to be a Catholic Christian by faith.
No. The Roman Catholic Church was established after Jesus's death. It traces its history to Jesus Christ and the Apostles, who provided the beginning structure for the early Christian Church.
In 380 C.E., Roman Catholicism became the official religion of the Roman Empire.











































