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How Catholicism Started

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Oh, for the love of history and mysteries of faith! If you’ve ever wondered how Catholicism started, you’re in for quite the ride. This isn’t just about understanding a religion; it’s about peeling back the layers of centuries-old traditions, navigating geopolitical landscapes, and delving into the core of belief systems. So, buckle up!

The Catholic Church is one of the oldest and most influential religions in the world. With over 1.2 billion followers worldwide, it is the largest Christian denomination in the world. Catholicism has played a significant role in shaping Western culture and has had a profound influence on politics, literature, and art. Catholicism is a faith that has a long and varied history, spanning thousands of years. In this blog, we will explore the history of Catholicism, from its origins in ancient times to its development and evolution throughout the centuries.

The word “catholic” has been a part of the Christian lexicon for centuries, and its meaning has evolved over time. But what is the origin of the word, and where did it come from? To answer this question, we must look at the etymological roots of the word “catholic”, which come from Hebrew, Greek, and Aramaic.


The origin of the word “catholic” is believed to be the Greek word “katholikos”, which is a combination of two words – “kata” and “holos”. “Kata” means “according to”, while “holos” means “whole”. Combined, the two words form the phrase “according to the whole”, which is the origin of the word “catholic”.


The Hebrew version of the word “catholic” is “qadosh” which means “holy”. This is the root of the word “catholic”, as the Christian Church has always been seen as the “holy” church of God.

How Catholicism Started


The Greek version of the word “catholic” is “katholikos”, which is a combination of two words – “kata” and “holos”. “Kata” means “according to”, while “holos” means “whole”. Combined, the two words form the phrase “according to the whole”, which is the origin of the word “catholic”.

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The Aramaic version of the word “catholic” is “qadosh”, which means “holy”. This is the root of the word “catholic”, as the Christian Church has always been seen as the “holy” church of God.

In conclusion, the etymology of the word “catholic” is rooted in Hebrew, Greek, and Aramaic. The original meaning of the word was “according to the whole”, and it has since come to mean “holy”. The Catholic Church has adopted this word as their own, and it is now used to refer to the Universal Church.

Origins of Catholicism

Catholicism can be traced back to the early days of Christianity. It began when Jesus Christ founded the church in the first century A.D. The early church was Catholic in its beliefs and practices, which were based on the teachings of Jesus and the apostles. The early church was comprised of a variety of local churches, each with its own beliefs, practices, and customs.

Early Catholic Christian Beliefs

The early Catholics believed in the Trinity, the divinity of Jesus, the resurrection of the dead, and the importance of living a moral life. They also believed that the authority of the Church rested with the Pope, and that salvation could only be found by following the teachings of the Church. They believed that the sacraments were necessary for salvation and that they were necessary for the forgiveness of sins.

How Catholicism Started

Catholicism in the Roman World

In the Roman Empire of the first century, Christianity was a minority religion. However, it began to spread rapidly and by the fourth century, it was the official religion of the Roman Empire. During this time, Christianity was heavily influenced by the Roman culture and adopted many of its practices, such as the veneration of saints and the use of Latin in the liturgy.

The Spread of Catholic Christianity

Following the fall of the Roman Empire, the Catholic Church spread throughout Europe and the world. It was the dominant religion in Europe for centuries and played a major role in the development of western civilization. During the Middle Ages, the Church was the most powerful force in Europe and was responsible for unifying the continent politically, economically, and culturally.

The Development of Catholic History

Throughout its history, the Catholic Church has faced numerous challenges. From the Protestant Reformation to the French Revolution, the Church has had to adapt to changing times and ideologies. Despite these challenges, the Church has remained a major force in the world and has been a source of comfort and strength to millions of people.

How Catholicism Started

Major Events in the Catholic Church

  1. Council of Nicaea (325 AD): The Council of Nicaea was the first ecumenical council of the Catholic Church, convened by the Roman Emperor Constantine I. It established the Nicene Creed, which defined the basic doctrines of Christianity and formed the basis for all subsequent Catholic Church doctrine.
  2. Conversion of the Franks (496 AD): The conversion of the Franks to Christianity was a major event in the history of the Catholic Church. Led by Clovis I, the Frankish king, the Franks were converted to Catholicism after Clovis was baptized in Reims, France, in 496 AD.
  3. Schism of 1054 (1054 AD): The Schism of 1054 was the formal split between the Catholic Church in the West and the Eastern Orthodox Church in the East. The Schism divided the Church into two distinct branches, with the Western Church becoming the Roman Catholic Church, and the Eastern Church becoming the Eastern Orthodox Church.
  4. Investiture Controversy (1075-1122 AD): The Investiture Controversy was a dispute between the Pope on one side and the Holy Roman Emperor and other secular rulers on the other. It was a major issue for the Catholic Church as it sought to establish its authority over secular rulers.
  5. Crusades (1095-1291 AD): The Crusades were a series of holy wars launched by the Catholic Church in order to reclaim the Holy Land from Muslim forces. The Crusades were a major event in the history of the Church and had a lasting impact on the relationship between the Muslim and Christian worlds.
  6. Fourth Lateran Council (1215 AD): The Fourth Lateran Council was the 12th ecumenical council of the Catholic Church. It was convened by Pope Innocent III and marked a major milestone in the history of the Church, as it established the Doctrine of Transubstantiation, which defined the Catholic belief in the Real Presence of Christ in the Eucharist.
  7. Avignon Papacy (1309-1377 AD): The Avignon Papacy was a period in which the popes resided in Avignon, France, instead of Rome. This period marked a major shift in the Church, and had a lasting impact on the Church’s power and influence within Europe.
  8. Council of Trent (1545-1563 AD): The Council of Trent was the 19th ecumenical council of the Catholic Church. It marked a major shift in the Church’s theology and marked the beginning of the Counter-Reformation, which sought to reform the Church and combat the spread of Protestantism.
  9. Declaration of the Dogma of the Immaculate Conception (1854 AD): The Declaration of the Dogma of the Immaculate Conception was a major event in the history of the Catholic Church. It declared the belief that Mary, the mother of Jesus, was preserved from the stain of original sin from the moment of her conception.
  10. Second Vatican Council (1962-1965 AD): The Second Vatican Council was the 21st ecumenical council of the Catholic Church. It was convened by Pope John XXIII and marked a major shift in the Church, as it sought to modernize the Church and introduce reforms to bring it into the modern age.

Catholic Teachings Through the Ages

The Catholic Church has a long and varied history of teachings. From the earliest days of Christianity, the Church has been committed to defending the truth and upholding the teachings of Jesus and the apostles. Throughout the centuries, the Church has adapted its teachings to meet the needs of its followers and to respond to changing times.

Early Christian Practices in Catholicism

The early Christians practiced a variety of rituals, including baptism, confession, the Lord’s Supper, and the veneration of saints. These practices were later adopted by the Catholic Church and remain a part of the faith today.

  1. The Sign of the Cross : This traditional sign of the faith is used by Catholics to bless themselves or to make the sign of the cross on the forehead, lips, and heart when making a profession of faith.
  2. Prayers of the Rosary: This is a set of prayers said on a rosary, a string of beads used to keep track of the prayers. The rosary is composed of a set of five “mysteries” that are said in a set order and are accompanied by a set of specific prayers.
  3. Holy Water: Catholic churches often have a font of holy water at the entrance, which is used to bless oneself when entering or leaving the church. This is an ancient Christian practice that has been used since the 4th century.
  4. Fasting: Catholics typically observe a fasting period during the season of Lent, when they abstain from certain foods and activities. This is intended to be a period of spiritual preparation for Easter .
  5. Processions and Pilgrimages: These are a common part of Catholic worship, in which people travel to a sacred place and participate in a procession to honor a particular saint or other religious figure.
  6. Confession: This is the practice of confessing one’s sins to a priest, who is then able to grant absolution. This is an ancient practice that is still observed today.
  7. Eucharist: This is the central sacrament of the Catholic Church, in which the bread and wine are consecrated and believed to become the body and blood of Christ. Catholics believe that those who receive the Eucharist receive the grace of God.
  8. Baptism: This is the rite of initiation into the Christian faith, in which a person is baptized in water and is welcomed into the Church. It is an ancient practice that is still performed today.

The Catholic Faith in the Medieval World

In the Middle Ages, the Catholic Church was the dominant force in Europe. It was the source of law, morality, and education and was the most powerful institution in Europe. During this time, the Church was responsible for spreading its teachings and defending the faith from outside influences.

The Church of Rome and Catholicism

The Church of Rome has been the center of the Catholic faith since its founding in the first century. The Church of Rome is responsible for appointing the Pope and overseeing the Church’s teachings and practices. The Church of Rome also plays an important role in the practice of Catholicism throughout the world.

History of The Crusades

The history of the Crusades is a complex and fascinating chapter in the annals of human civilization. These series of military campaigns, sanctioned by the Latin Church in the Middle Ages, were waged by Christian warriors in an attempt to reclaim the Holy Land from Muslim control. The Crusades left an indelible mark on the world, shaping the geopolitical landscape of Europe and the Middle East for centuries to come. In this article, we delve into the origins, events, and consequences of this tumultuous period.

Definition and Background of the Crusades

The Crusades were a series of religious wars that spanned from the 11th to the 13th century. They were initiated with the aim of liberating Jerusalem and other significant sites in the Holy Land from Muslim rule. The word “Crusade” itself derives from the Latin term “crux,” meaning cross, symbolizing the holy mission undertaken by the Christian warriors.

Causes of the Crusades

Several factors contributed to the eruption of the Crusades. One key factor was the fervent religious zeal that swept across Europe during the Middle Ages. The Catholic Church, seeking to unite Christendom and consolidate its influence, encouraged Christian knights and peasants alike to take up arms in defense of the faith. Additionally, the Byzantine Empire, facing threats from the expanding Seljuk Turks, appealed to the West for military assistance, providing further impetus for the Crusades.

The First Crusade (1096-1099)

The First Crusade was the most successful of all the Crusades, resulting in the establishment of Crusader states in the Levant. It began in 1096 when Pope Urban II issued a call to arms, urging Christians to undertake a holy pilgrimage and defend their fellow believers in the East. Led by charismatic leaders like Godfrey of Bouillon and Bohemond of Taranto, the Christian forces achieved a momentous victory by capturing Jerusalem in 1099.

The Second Crusade (1147-1149)

The Second Crusade was launched in response to the fall of the County of Edessa to the Muslim forces. It was led by European monarchs, including Louis VII of France and Conrad III of Germany. However, despite initial optimism, the Crusade failed to achieve its objectives and ended in a costly defeat for the Christians.

The Third Crusade (1189-1192)

The Third Crusade, also known as the Kings’ Crusade, was triggered by the capture of Jerusalem by the Muslim leader Saladin. Three European monarchs, Richard the Lionheart of England, Philip II of France, and Frederick I Barbarossa of the Holy Roman Empire, took part in the Crusade. Although they made significant military gains, including the recapture of key coastal cities, they ultimately fell short of reclaim

The Reformation and Its Impact on Catholicism

The Protestant Reformation of the 16th century was a major challenge to the Catholic Church. During this time, many people began to question the authority of the Church and the teachings of Catholicism. The Church responded by reforming its teachings and practices and by reaffirming its commitment to the truth.

The Scottish Reformation and Catholicism

The Scottish Reformation began in 1560 and was the first major challenge to the Catholic Church in Scotland. During this time, many people began to question the authority of the Church and the teachings of Catholicism. As a result, the Church in Scotland was forced to adapt and reform its teachings and practices.

Modern Catholicism and Its Practices

Today, the Catholic Church is a global faith with a rich history. It is the largest Christian denomination in the world, with over 1.2 billion adherents. The Church continues to adapt its teachings and practices to meet the needs of its followers and to respond to changing times.

Catholic Christianity in the 21st Century

Today, the Catholic Church is thriving and continues to spread its message of love and hope throughout the world. Through its worship services, charitable works, and mission outreach, the Church is a source of strength and comfort to millions of people. As we move forward into the 21st century, the Catholic Church will remain a beacon of faith for generations to come.

How Catholicism Started: The First Glimmer

Catholicism, the world’s oldest and largest Christian church, didn’t just spring up overnight. It all kicked off in the first century AD, with Jesus Christ and his apostles in Jerusalem. Now, let’s turn back the hands of time to explore the birth of this formidable religion.

Jesus Christ: The Catalyst

Without Jesus, there’d be no Catholicism, plain and simple. Born in Bethlehem around 4 BC, Jesus’ teachings on love, forgiveness, and faith are the bedrock of Catholicism. He gathered twelve apostles and charged them with spreading his teachings . But here’s the kicker – it was one apostle in particular that played a pivotal role in the genesis of Catholicism.

Peter: The First Pope

Jesus singled out Peter, declaring, “Upon this rock, I will build my church.” This statement was a game-changer. It’s this apostolic succession, starting with Peter, that Catholics believe gives the Pope his spiritual authority. The role of the Pope, or the Bishop of Rome, became central to the organization of the Church.

The Early Church: Faith Amidst Adversity

The early Christians, those gutsy souls, faced persecution from the Roman Empire. But instead of crumbling, the Church spread and strengthened. There’s nothing like a bit of adversity to fuel the fires of faith, right?

The Edict of Milan: A Turning Point

In 313 AD, Emperor Constantine issued the Edict of Milan, granting Christians the freedom to worship. Boy, was this a turning point! Christianity transitioned from being a persecuted sect to a recognized religion.

Emperor Constantine: Catalyst for Catholicism

The narrative of the Catholic Church is deeply intertwined with the life and influence of Emperor Constantine. His reign not only shaped the Roman Empire, but it also had profound implications for the Catholic Church and the course of Christian history.

Life of Emperor Constantine

Early Life and Conversion to Christianity

Born in Naissus, in modern-day Serbia, Constantine was introduced to Christianity at a tender age, primarily through his mother, Helena. His conversion, however, did not occur until the fateful Battle of Milvian Bridge in 312 AD, where, legend has it, he saw a vision of a cross in the sky accompanied by the words “In hoc signo vinces” – “In this sign, you will conquer.”

Constantine as Emperor

Constantine’s reign marked a new era for the Roman Empire. He moved the capital from Rome to Byzantium, later known as Constantinople and now Istanbul, effectively shifting the power dynamics within the Empire.

Constantine’s Influence on the Catholic Church

The Edict of Milan

In 313 AD, Constantine declared the Edict of Milan, which extended religious tolerance to Christians, ending years of persecution. This was a significant shift, providing Christianity the legal freedom to exist and thrive within the Empire.

The Council of Nicaea

In 325 AD, Constantine convened the Council of Nicaea, the first ecumenical council of the Christian Church. This council was of immense significance as it was instrumental in resolving the Arian controversy, thus stabilizing the Church’s foundational beliefs.

Constantine and the Nicene Creed

It was during the Council of Nicaea that the Nicene Creed, a statement of faith still recited in Catholic Mass today, was formulated and adopted. Constantine played a crucial role in its establishment, emphasizing the importance of a united theological front.

Constantine’s Architectural Contributions

The Old St. Peter’s Basilica

One of Constantine’s most enduring legacies is his architectural contributions to the Church. He commissioned the construction of the Old St. Peter’s Basilica, which stood as a testament to the grandeur of Christian faith for over a thousand years.

The Church of the Holy Sepulchre

Constantine also ordered the construction of the Church of the Holy Sepulchre in Jerusalem, a significant pilgrimage site for Christians, marking the purported site of Jesus’ resurrection.

Legacy of Emperor Constantine in the Catholic Church

Impact on the Church’s Organization

Constantine’s influence extended beyond theological and architectural realms. His reign saw a significant shift in the organizational structure of the Church. The Church began to mimic the administrative structure of the Roman Empire, solidifying its hierarchical order and leading to the establishment of ecclesiastical offices such as bishops, archbishops, and patriarchs.

Impact on the Church’s Doctrinal Development

Constantine’s involvement in the Council of Nicaea and the development of the Nicene Creed was instrumental in the Church’s doctrinal development. By establishing a consensus on key theological issues, Constantine helped pave the way for a unified Church, free from divisive heresies.

Criticisms of Constantine’s Influence

Despite his significant contributions, Constantine’s influence on the Church has not been without criticism. Some critics argue that the merging of church and state during his reign blurred the lines between political power and religious authority, leading to instances of corruption and abuse of power in the Church’s history. Others suggest that his involvement in theological matters may have compromised the purity of the Christian faith.

Emperor Constantine’s influence on the Catholic Church was transformative, to say the least. His reign not only marked a turning point for Christianity within the Roman Empire but also laid the groundwork for the Church’s future development. From his legalization and promotion of Christianity to his contributions in theological consensus and architectural grandeur, Constantine’s legacy remains etched in the annals of the Catholic Church.

The Great Schism: A House Divided

In 1054, the Church split into the Eastern Orthodox and Western Catholic Churches in an event known as the Great Schism. This was the first significant division within Christianity, and it had a profound impact on the shape of Catholicism.

The Role of Politics

The Schism wasn’t just about theological differences; politics also had a hand in it. Power struggles and cultural differences between Rome and Constantinople played a crucial part in this division.

The Middle Ages: Trials and Triumphs

In the Middle Ages, the Catholic Church became a dominant force in Europe, influencing every aspect of life. But it wasn’t all sunshine and roses. The Church faced numerous challenges, from heresies to the infamous Inquisition.

Crusades: Holy Wars

The Crusades, a series of holy wars, were a controversial period in Catholic history. Initiated to reclaim the Holy Land, they led to centuries of conflict.

The Reformation: A New Challenge

In the 16th century, the Protestant Reformation led by Martin Luther presented a significant challenge to the Catholic Church. This resulted in the creation of Protestant churches, further fracturing Christianity.

The Counter-Reformation: A Response to Change

In response to the Reformation, the Catholic Church initiated the Counter-Reformation. The Council of Trent (1545-1563) was the heart of this movement, implementing crucial reforms and defining Catholic doctrine as we know it today.

Catholicism in the Modern Era

The Catholic Church has evolved considerably since its inception. From the dawn of the Enlightenment through the world wars and into the 21st century, the Church has navigated the shifting currents of society.

Vatican II: Embracing the Modern World

The Second Vatican Council (1962-1965) was a pivotal moment in modern Catholic history. It sought to engage with the modern world, resulting in significant changes to liturgy and the Church’s approach to ecumenism.

Catholicism Today: A Global Faith

Today, the Catholic Church is a global institution with over 1.3 billion followers. It continues to navigate the challenges and opportunities of the 21st century, from social issues to the role of technology in faith.

FAQs: How Catholicism Started

Q1: Who is considered the founder of Catholicism? A1: Catholicism believes in apostolic succession, starting with Saint Peter, who was named by Jesus as the rock upon which the Church would be built. However, the teachings of Jesus Christ form the foundation of the Church.

Q2: How did Catholicism spread? A2: Initially, Catholicism spread through the efforts of apostles and missionaries. Later, the conversion of the Roman Empire to Christianity dramatically increased its influence.

Q3: What caused the Great Schism? A3: The Great Schism was caused by a complex mix of theological disagreements, cultural differences, and political conflicts between the Western and Eastern branches of Christianity.

Q4: What were the impacts of the Reformation on Catholicism? A4: The Reformation led to a significant loss of followers and power for the Catholic Church. However, it also sparked the Counter-Reformation, leading to significant internal reforms.

Q5: How has Catholicism changed over time? A5: Catholicism has evolved in response to societal changes, theological developments, and internal reform movements. Key moments include the Council of Trent and Vatican II.

Q6: How does the Catholic Church influence the world today? A6: The Catholic Church wields significant influence through its moral teachings, social services, and diplomatic activities. It’s also a major actor in global discussions on issues like poverty, climate change, and peace-building.

Final Thoughts – How Catholicism Started

So, there you have it – a whistle-stop tour through the history of how Catholicism started. From its inception with Jesus and his apostles, through the trials of the early Church, the schisms, the reformations, and into the modern era, Catholicism has been a dynamic and enduring force in the world.

The story of Catholicism isn’t just about religious belief, but also about politics, society, and culture. It’s a testament to the resilience of faith and the power of tradition. Understanding how Catholicism started gives us a fresh perspective on this fascinating religion and its place in our world today. So, next time you hear the bells chime at the local cathedral, you’ll appreciate the centuries of history that they echo.

How to be saved according to the Bible    In order to understand how to be saved, we first need to understand what salvation is. Salvation is when God forgives our sins and gives us eternal life. It's a free gift from God that we can't earn on our own. So how do we receive this gift? The Bible tells us that there are six steps: hearing, believing, repenting, confessing, repenting again, and believers baptism. Let's break each one of these down.     Hearing - The first step is hearing the gospel. The gospel is the good news that Jesus died on the cross for our sins and rose again. This news must be heard in order for us to believe it.     Believing - Once we hear the gospel, we must believe it. This means that we trust that Jesus is who He says He is and that He can save us from our sins.     Repenting - Once we believe the gospel, we must repent of our sins. This means that we turn away from our sin and start living for God.     Confessing - After we repent of our sins, we need to confess them to God. This means that we tell God all of the sinful things we have done and ask Him for forgiveness.     Believers Baptism - The final step is believers baptism. This is when a person who has already believed and repented is baptized in water as an outward sign of their inward decision to follow Christ. Baptism doesn't save us, but it's an important step of obedience for every Christian.     Discipling others -  Finally, once we have received salvation through these steps, it's important that we continue to grow in our faith and share the gospel with others so they too can be saved.      These are the six steps required for salvation according to the Bible: hearing, believing, repenting, confessing, repenting again, and believers baptism. If you have never done these things or if you're not sure if you've done them correctly, I encourage you to talk to a pastor or other Christian friend who can help guide you through these steps. Salvation is a free gift from God, but it's one that we need to take intentional steps to receive. Don't wait another day - start your journey towards salvation today!


  • Greg Gaines

    Father / Grandfather / Minister / Missionary / Deacon / Elder / Author / Digital Missionary / Foster Parents / Welcome to our Family https://jesusleadershiptraining.com/about-us/

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