Nearly two thousand years, in order
The Evidence Timeline
A.D. 30–33
Jesus Christ Founds His Church
Jesus did not write a Bible. He founded a Church, giving Peter authority (“Thou art Peter; and upon this rock I will build my church,” Matthew 16:18), instituting the Eucharist (“This is my body... This is my blood,” Matthew 26:26-28), and giving the Apostles authority to forgive sins (John 20:23).
A.D. 33
Pentecost
The Holy Spirit descended upon the Apostles. The Church was born. Mary, the Mother of Jesus, was present with them (Acts 1:14). The Church begins preaching, baptizing, celebrating the Eucharist, and ordaining leaders across the Roman Empire.
A.D. 50–100
The Apostolic Age
The New Testament is gradually written, while Christianity spreads primarily through preaching and apostolic authority. St. Paul writes: “Stand fast; and hold the traditions which you have learned, whether by word, or by our epistle” (2 Thessalonians 2:14) — commanding Christians to preserve both written and oral apostolic teaching.
A.D. 96
St. Clement of Rome
The third successor of St. Peter writes while some Apostles' own disciples are still alive, explaining Apostolic Succession: “The Apostles appointed bishops and deacons... and afterwards directed that other approved men should succeed them.”
A.D. 107
St. Ignatius of Antioch
A disciple of St. John the Apostle, writing seven letters on his way to martyrdom. He is the first recorded writer to use the phrase “the Catholic Church,” and he teaches the Real Presence directly: those who deny the Eucharist as the Flesh of Christ, he says, stand outside the faith. Only seventy years had passed since the Resurrection.
A.D. 155
St. Justin Martyr
Writes one of history's earliest detailed descriptions of Christian worship — Scripture readings, a homily, common prayers, bread and wine, the Eucharistic Prayer, and Holy Communion. Anyone attending today's Catholic Mass would immediately recognize its structure.
A.D. 180
St. Irenaeus of Lyons
A disciple of St. Polycarp, who had himself been taught by St. John. Irenaeus points Christians to the bishops who preserve Apostolic Tradition, insists every Church must agree with Rome, and calls Mary the “New Eve” whose obedience untied the knot of Eve's disobedience.
3rd Century
Christianity Continues
Christian writings throughout the Roman Empire continue to affirm Apostolic Succession, the Eucharist, baptismal regeneration, prayer for the dead, honor given to the martyrs, and bishops leading the Church — a remarkably consistent picture across a vast and often-persecuted Church.
A.D. 313
Christianity Becomes Legal
The Edict of Milan ends widespread persecution. For the first time, Christians can worship publicly, and the Church begins constructing churches throughout the Empire.
A.D. 325
Council of Nicaea
Bishops gather to defend the divinity of Christ against the heresy of Arianism. The Nicene Creed is written — the very same Creed every Catholic Mass still professes today, nearly 1,700 years later.
A.D. 382
The Canon of Scripture
Under Pope Damasus I, the Council of Rome lists the books of Sacred Scripture recognized by the Catholic Church, including the seven deuterocanonical books. Regional councils at Hippo (393) and Carthage (397, 419) reaffirm the same canon.
A.D. 397
St. Augustine
One of Christianity's greatest theologians writes: “I would not believe the Gospel unless moved thereto by the authority of the Catholic Church.” His writings shape Christian theology for the next sixteen centuries.
A.D. 431
Council of Ephesus
Bishops formally proclaim Mary Theotokos — Mother of God — a title that protects the truth that Jesus Christ is one divine Person, fully God and fully man.
A.D. 451
Council of Chalcedon
The Church defines that Christ possesses two natures — fully divine, fully human — without confusion or division. Nearly every Christian tradition today, Catholic and Protestant alike, accepts this teaching.
A.D. 500–1500
One Thousand Years United
For roughly a thousand years, Western Christianity remains united under the Catholic Church. The Mass is celebrated daily. The seven sacraments are universally recognized. Monasteries preserve learning and copy Scripture by hand. Hospitals, universities, and countless charitable institutions are founded across Europe.
A.D. 1517
The Protestant Reformation
Martin Luther publishes his Ninety-Five Theses. Major disagreements follow over authority in the Church, justification, the number of sacraments, the Eucharist, Sacred Tradition, and the Old Testament canon. Luther's German Bible separates seven Old Testament books into an “Apocrypha” section; later Protestant editions omit them entirely.
A.D. 1546
Council of Trent
In direct response to the Reformation, the Catholic Church formally and definitively reaffirms the traditional canon of Scripture and its sacramental teaching, a position that remains unchanged to this day.
Today
The Catholic Church
The Church continues to celebrate the Eucharist, Baptism, Confirmation, Confession, Holy Orders, Marriage, and Anointing of the Sick. She continues to profess the Nicene Creed, Apostolic Succession, the Real Presence, the Communion of Saints, and Sacred Scripture and Tradition together — understood as a faith handed down, unbroken, from Christ through the Apostles.
"I would not believe the Gospel unless moved thereto by the authority of the Catholic Church."
— St. Augustine of Hippo
Doctor of the Church, c. A.D. 397
"It is a matter of necessity that every Church should agree with this Church, on account of its preeminent authority."
— St. Irenaeus of Lyons
Against Heresies, c. A.D. 180
"Jesus Christ yesterday, and today; and the same for ever."
— Hebrews 13:8
Douay-Rheims Bible
One pattern, repeated for fifteen centuries
The Historical Question
Throughout this timeline, one pattern appears again and again. The earliest Christians believed in:
Bishops succeeding the Apostles
The Real Presence of Christ in the Eucharist
The Holy Sacrifice of the Mass
Baptism for the forgiveness of sins
Sacred Tradition alongside Sacred Scripture
The authority of the universal Church
Mary honored as the Mother of God
The Communion of Saints
"If these beliefs were taught by the earliest generations of Christians, when — and why — should they have been abandoned?"
The Catholic Church answers that they should not have been abandoned at all — that they were faithfully handed down from Jesus Christ through the Apostles, preserved by the early Church Fathers, clarified by the Councils, and continue today in the Catholic faith.
Common questions
Questions About Catholic History
How far back does the Catholic Church actually go?
The Catholic Church traces its founding directly to Jesus Christ around 30-33 AD, when He told the Apostle Peter, "Thou art Peter; and upon this rock I will build my church" (Matthew 16:18). The Church considers Pentecost, roughly 33 AD, its birthday, when the Holy Spirit descended on the Apostles.
Was there ever a time when all Christians agreed on these beliefs?
Yes. For roughly 1,000 years in the West — and even longer including the East — Christianity remained substantially united under one visible Church, holding the beliefs documented on this timeline: the Real Presence, apostolic succession, the seven sacraments, and the authority of Sacred Tradition alongside Scripture.
What caused the split at the Reformation in 1517?
Major disagreements arose over authority in the Church, the doctrine of justification, the number of sacraments, the nature of the Eucharist, the role of Sacred Tradition, and even which books belonged in the Old Testament. The Catholic Church responded at the Council of Trent (1546) by reaffirming its traditional teaching and canon of Scripture.
Why did Martin Luther remove books from the Old Testament?
Luther's German Bible placed seven Old Testament books — Tobit, Judith, Wisdom, Sirach, Baruch, and 1 and 2 Maccabees — into a separate section he labeled 'Apocrypha,' considering them useful to read but not equal to Holy Scripture. Later Protestant publishers omitted them from many editions entirely. The Catholic Church has always included these books, called the deuterocanonical books, as fully inspired Scripture.
Did the early Church really believe in the Real Presence of the Eucharist this early?
Yes. St. Ignatius of Antioch, writing around 107 AD — only about seventy years after the Resurrection — described those who denied the Eucharist as the actual Body of Christ as being outside authentic Christian faith. This belief appears consistently in every century that follows, with no evidence of it being a later invention.
What is the significance of the Council of Nicaea in 325 AD?
The Council of Nicaea produced the Nicene Creed, still professed at every Catholic Mass today, and formally defended the divinity of Jesus Christ against a heresy called Arianism. It is one of the earliest and most universally accepted councils in all of Christian history, predating the Reformation by nearly 1,200 years.
A prayer across the centuries
A Prayer of Faith Through the Ages
Lord Jesus Christ, the same yesterday, today, and forever,
I thank You for a faith that has not changed.
Through Apostles and martyrs,
through councils and centuries,
through persecution and peace,
Your Church has endured.
Let me be one more link
in that unbroken chain.
Amen.
Nearly two thousand years, unbroken.
Become Part of the Story.
The same faith held by Peter, Ignatius, Augustine, and countless generations since is still here, waiting for you.