The Council of Nicaea was not a political invention of Christianity, nor was it a secret meeting where bishops decided which books belonged in the Bible. It was the Church’s public defense of the apostolic faith: that Jesus Christ is not a creature, not a lesser divine being, and not merely God’s highest servant, but the eternal Son of God, “true God from true God,” worthy of the same worship and glory as the Father.
What exactly was the Council of Nicaea, and why is it important?
The Council of Nicaea met in A.D. 325 in Nicaea, modern İznik in Turkey. It is remembered by Orthodox Christians as the First Ecumenical Council, meaning it was a council gathered for the whole Church, not merely a local dispute. According to ancient sources, Emperor Constantine called the council after a serious controversy spread through the Christian world concerning the identity of Jesus Christ. Eusebius of Caesarea, who was present at the council, describes Constantine inviting bishops from many regions and helping provide travel for them.
The main issue was the teaching of Arius, a presbyter from Alexandria. Arius taught that the Son of God was not eternal in the same sense as the Father. In one of his surviving letters, Arius says plainly that the Son “has a beginning” and that before He was begotten, “He was not.”
To Arius, this protected the uniqueness of God the Father. But to the Church, it damaged the gospel itself. If the Son is a creature, even the highest creature, then the One who became man for our salvation is not truly God. And if Christ is not truly God, then Christian worship, salvation, prayer, baptism, and the entire life of the Church are thrown into confusion.
That is why Nicaea mattered.
The real questions were not simply academic, they were theological:
-Who is Jesus Christ?
-Is He the first and greatest thing God made?
-Or is He eternally begotten of the Father, sharing the same divine nature?
The Scriptures had already forced the Church to confess something far greater than “Jesus was an inspired teacher.” John opens his Gospel by saying, “In the beginning was the Word, and the Word was with God, and the Word was God,” and then tells us that “the Word became flesh” (John 1:1, 14). Thomas confesses the risen Christ as “My Lord and my God” (John 20:28). Hebrews says of the Son, “Your throne, O God, is forever and ever” (Hebrews 1:8), and also says that the Son is “the radiance of the glory of God and the exact imprint of his nature” (Hebrews 1:3).
Paul says that Christ existed in “the form of God” and yet humbled Himself by taking “the form of a servant” (Philippians 2:6–7). Colossians says that “all things were created through him and for him,” and that “in him all things hold together” (Colossians 1:16–17). Titus calls Him “our great God and Savior Jesus Christ” (Titus 2:13). Peter likewise speaks of “our God and Savior Jesus Christ” (2 Peter 1:1).
So Nicaea was not trying to replace Scripture with philosophy. It was trying to protect what Scripture already teaches: the Son is not part of creation. He is the Creator.
As John says, “All things were made through him, and without him was not any thing made that was made” (John 1:3). That verse creates a sharp line. Everything that was made was made through the Word. Therefore the Word Himself cannot belong to the category of “made things.”
What Arius taught:
Arius did not deny that Jesus was great. He did not deny that Jesus was before the world, exalted, or uniquely related to God. That is part of what made the controversy so dangerous. His teaching could sound reverent at first.
But Arius crossed a line the Church could not accept. He taught that the Son was not eternal as the Father is eternal. He taught that the Son had a beginning. He taught that the Son was not of the same divine essence as the Father.
The Nicene Creed directly answered these claims. The council confessed that Jesus Christ is:
“God from God”
“Light from Light”
“true God from true God”
“begotten, not made”
“of one substance with the Father”
The original creed of A.D. 325 specifically rejects those who say “there was when He was not,” or that the Son “came into existence out of nothing,” or that He is “created.”
That language was not decoration. It was a fence around the gospel.
“Begotten, not made”
One of the most important phrases from Nicaea is “begotten, not made.”
This does not mean the Son was born in time, as creatures are born. It means the Son is eternally from the Father, not created by the Father. A human son shares the nature of his father; he is not a different kind of being. In an infinitely higher and eternal way, the Son is from the Father and shares the Father’s divine nature.
The Orthodox Church in America summarizes Nicaea this way: the Logos, the Word and Son of God, is “uncreated, ever-existent, and fully divine,” “begotten” from the Father, “not made or created,” and “of one essence” with the Father.
That is why the Greek word homoousios became so important. It means “of one essence” or “of one substance.” The point was not to introduce a new god or a new doctrine. The point was to say clearly that the Son is not similar to God as a creature may be similar to God. He is truly God by nature.
Why this matters for worship?
For Orthodox Christians, doctrine is never just an intellectual puzzle. Doctrine protects worship.
Christians do not merely admire Jesus. We worship Him.
Stephen, while being martyred, prayed, “Lord Jesus, receive my spirit” (Acts 7:59). The disciples worshiped the risen Christ (Matthew 28:17). Every knee bows to Him and every tongue confesses Him as Lord (Philippians 2:10–11). Revelation shows heavenly worship offered to “him who sits on the throne and to the Lamb” (Revelation 5:13).
If Jesus is a creature, then worshiping Him would be idolatry. But if He is truly God from the Father, then worshiping Him is not only permitted — it is the proper response to who He is.
This is one reason Nicaea remains so important. It defended Christian worship from becoming confused. The Church worships Christ because Christ is truly God.
Why this matters for salvation?
Nicaea also matters because salvation depends on who Christ is.
The gospel is not that God sent a powerful creature to help us. The gospel is that God Himself entered into our condition, took on our humanity, defeated death, and united us to Himself.
Only God can save. Scripture says, “I, I am the LORD, and besides me there is no savior” (Isaiah 43:11). Yet the New Testament calls Jesus Savior (Luke 2:11; Titus 2:13; 2 Peter 1:1). That only makes sense if Jesus shares fully in the divine identity.
This is why the Fathers fought so hard over what may seem like technical language. If Christ is not truly God, He cannot fully reveal the Father. If He is not truly man, He cannot heal our humanity. The Church’s confession is not abstract: the eternal Son became man “for us and for our salvation.”
As Christ Himself says, “Whoever has seen me has seen the Father” (John 14:9). And again: “I and the Father are one” (John 10:30).
Did Nicaea invent the divinity of Christ?
No. This is one of the most common misunderstandings about the council.
Long before Nicaea, Christians already spoke of Jesus in divine terms. Ignatius of Antioch, writing in the early second century, referred to “Jesus Christ our God” and spoke of believers being stirred up by “the blood of God.”
That does not mean every later theological term had already been developed. The Church’s language became more precise as heresies forced the Church to answer more carefully. But the worship of Christ, the confession of Christ as Lord, and the belief that Christ is truly divine were not invented in A.D. 325.
Nicaea clarified. It did not create.
From an Orthodox perspective, this is very important. The Church does not believe that truth begins when a council speaks. Rather, an Ecumenical Council bears witness to the apostolic faith already entrusted to the Church. The council gives a public, authoritative confession when the faith is being distorted.
As Jude says, Christians are to “contend for the faith that was once for all delivered to the saints” (Jude 3). That is what Nicaea did.
Did Nicaea choose the books of the Bible?
No. This is another popular myth.
The surviving documents from Nicaea deal with the Arian controversy, the creed, church order, discipline, the date of Pascha/Easter, and related matters. The council issued canons, but those canons were not a list of biblical books.
That does not mean the biblical canon was unimportant. It simply means that the Council of Nicaea was not the council that decided the canon of Scripture.
In fact, the bishops at Nicaea argued from Scripture because they already received Scripture as authoritative. The debate was not whether the Bible mattered. The debate was how to faithfully confess what the Bible teaches about the Son.
Why Christians still care
Christians do not treat Nicaea as a dusty historical event. The Nicene faith is prayed, sung, confessed, and lived.
The Creed is part of the Divine Liturgy. It is not merely a museum piece. It is the Church’s living confession before God: “I believe…” The Orthodox Church uses the Creed as a formal confession of faith, including in baptismal and liturgical life.
This matters because Christianity is not reinvented every generation. The Church receives, guards, and hands down the faith. Paul tells Timothy to guard “the good deposit” entrusted to him (2 Timothy 1:14). He tells the Thessalonians to “stand firm and hold to the traditions” they were taught (2 Thessalonians 2:15). He tells the Corinthians, “I delivered to you as of first importance what I also received” (1 Corinthians 15:3).
That is the heartbeat of Orthodox Christianity: not novelty, but faithful reception. Not private invention, but the life of the Church rooted in the apostles, the Scriptures, the Eucharist, the saints, and the worship of the Holy Trinity.
Why Nicaea still matters today
Nicaea still matters because people still to this day misunderstand Jesus.
Some reduce Him to a prophet...
Some call Him a created being...
Some admire Him as a moral teacher...
Some use His name while denying His eternal divinity...
Some want the ethics of Jesus without the worship of Jesus...
Many want to use the name of Jesus to their benefit, but Jesus didn't leave room for any of the aforementioned interpretations...
The Church’s confession also remains clear: Jesus Christ is not a lesser being between God and creation. He is the eternal Son and Word of God, begotten of the Father before all ages, through whom all things were made, who became man for our salvation.
This is not a side issue. It is the center.
If Christ is created, Christianity collapses into creature-worship.
If Christ is not truly God, He cannot fully reveal God.
If Christ is not truly God and truly man, He cannot truly unite man to God.
But if Nicaea is right, then the Christian faith stands on solid ground: the One who died and rose for us is no mere messenger. He is “our great God and Savior Jesus Christ” (Titus 2:13).
The Council of Nicaea matters because it defended the truth about Jesus Christ. It did not invent His divinity, rewrite the Bible, or create a new religion. It gave the Church a clear public confession against a serious distortion of the apostolic faith.
For Orthodox Christians, Nicaea is not only a historical council. It is part of the living memory of the Church. It reminds us that truth must be guarded, worship must be rightly ordered, and Christ must be confessed as He truly is:
not made, not created, not a lesser god, but the eternal Son of the Father, “true God from true God,” worthy of worship with the Father and the Holy Spirit unto ages of ages.
Amen.
Eusebius of Caesarea, Life of Constantine, Book III — Council called at Nicaea
https://www.newadvent.org/fathers/25023.htm
Original Creed of Nicaea, A.D. 325 — Greek/Latin text with English translation
https://earlychurchtexts.com/public/creed_of_nicaea_325.htm
Arius, Letter to Eusebius of Nicomedia
https://earlychurchtexts.com/public/arius_letter_to_eusebius_of_nicomedia.htm
Athanasius, De Decretis — Defense of the Nicene Council
https://www.newadvent.org/fathers/2809.htm
First Council of Nicaea — Canons and Synodal Letter
https://www.newadvent.org/fathers/3801.htm
Orthodox Church in America — The First Ecumenical Council
https://www.oca.org/orthodoxy/the-orthodox-faith/church-history/fourth-century/the-first-ecumenical-council
Orthodox Church in America — The Nicene Creed / Symbol of Faith
https://www.oca.org/orthodoxy/the-orthodox-faith/doctrine-scripture/the-symbol-of-faith/nicene-creed
Ignatius of Antioch, Epistle to the Ephesians
https://www.newadvent.org/fathers/0104.htm
Philip Schaff, History of the Christian Church, Vol. III — Council of Nicaea
https://www.ccel.org/ccel/schaff/hcc3.iii.xii.iv.html
Philip Schaff, Nicene and Post-Nicene Fathers, Series II, Vol. XIV — Seven Ecumenical Councils
https://www.ccel.org/ccel/schaff/npnf214.vii.vi.i.html