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I Believe: A Guide to the Nicene Creed (Part III)

  St. Athanasius (1883–84), by Carl Rohl-Smith, Frederik's Church, Copenhagen, Denmark

St. Athanasius (1883–84), by Carl Rohl-Smith, Frederik's Church, Copenhagen, Denmark



The First Council of Nicaea, convened in 325 AD, stands as a monumental milestone in the annals of Christianity. This council was called to confront the theological controversies that threatened to fracture the fledgling Christian community. Among its most enduring contributions is the formulation and endorsement of the Nicene Creed, a statement of faith whose echoes resound throughout the corridors of Christian history. In this comprehensive essay, we embark on a profound exploration of the historical backdrop of the Council of Nicaea, meticulously examine the genesis and adoption of the Nicene Creed, and delve into the intricate tapestry of controversies and debates that animated the council's deliberations.

The Council of Nicaea: Historical Background

To fully appreciate the significance of the First Council of Nicaea, it is imperative to immerse ourselves in the historical context that enveloped its convening. The early centuries of Christianity bore witness to a plethora of doctrinal disputes, with none more contentious than the Arian controversy.

Arianism and the Arian Controversy

At the heart of the Arian controversy was the presbyter Arius, whose theological movement, Arianism, posed a formidable challenge to the orthodox belief in the full divinity of Christ. Arius advanced the notion that Christ, while possessing a divine nature, was not of the same substance (homoousios) as God the Father. Instead, he contended that Christ was a created being, a position that struck at the core of Christian orthodoxy.

Arianism gained a substantial following, leading to deep schisms within the Christian community. The controversy not only imperiled the unity of the Church but also drew the attention of Emperor Constantine, who recognized the potential for theological discord to destabilize the Roman Empire. In response, Constantine summoned an ecumenical council to convene in the city of Nicaea in 325 AD.

The Creation and Adoption of the Nicene Creed

The primary objective of the First Council of Nicaea was to address the Arian controversy and arrive at a definitive statement of Christian belief that would decisively settle the matter. It was within this crucible of theological debate that the Nicene Creed was conceived and embraced.

The Crafting of the Nicene Creed

The Nicene Creed was painstakingly crafted by the assembled bishops, theologians, and church leaders at the Council of Nicaea. At its core was the assertion of Christ's divinity. The creed boldly declared that Christ was "of the same substance (homoousios) as the Father," a phrase meticulously chosen to repudiate Arianism's claims regarding the created nature of Christ. By affirming Christ's consubstantiality with the Father, the Nicene Creed delineated a clear theological stance on the deity of Christ.

This declaration, however, was not without its controversies and dissent. Some bishops harbored reservations about embracing the term "homoousios." They expressed concerns that this term might introduce a novel and potentially divisive element into Christian theology, one lacking explicit biblical precedent. The debates surrounding the use of "homoousios" were intense, with impassioned arguments echoing through the council chambers.

Adoption and Endorsement of the Nicene Creed

Ultimately, the Nicene Creed garnered the majority of the bishops' support and received their endorsement at the Council of Nicaea. This momentous decision signified a resounding victory for the champions of orthodoxy, as it categorically repudiated Arianism and cemented the Church's doctrinal position regarding the nature of Christ.

The Nicene Creed transcended being a mere theological statement; it became a symbol of unity within the Christian community. Its adoption signaled a collective affirmation of core Christian beliefs, providing much-needed clarity on central doctrines and serving as a unifying force in the face of theological discord.

Controversies and Debates at the Council

The First Council of Nicaea was far from a harmonious assembly; instead, it resembled a crucible of theological disputes and animated debates. Several pivotal controversies and debates punctuated the council's proceedings.

  • The Arian-Athanasian Conflict: The preeminent controversy that loomed large at the Council of Nicaea revolved around the Arian-Athanasian conflict. Arius himself was a prominent figure at the council, ardently defending his theological tenets. On the opposing front was Athanasius, a staunch advocate of Nicene orthodoxy. The debate between these two luminaries and their respective supporters was marked by its intensity and, at times, acrimony.

  • The "Homoousios" Debate: As previously mentioned, a significant point of contention revolved around the inclusion of the term "homoousios." Although it ultimately found acceptance within the Nicene Creed, its incorporation was not without resistance. Certain bishops harbored trepidations, fearing that it introduced an unfamiliar and potentially divisive element into Christian theology. The debates concerning the usage of "homoousios" underscored the intricate nature of the theological discussions that permeated the council.

  • Eusebius of Caesarea and Eusebius of Nicomedia: Two influential figures, Eusebius of Caesarea and Eusebius of Nicomedia, played pivotal roles in the council's proceedings. Eusebius of Caesarea was a staunch proponent of Nicene orthodoxy and played a crucial role in articulating the creed. Conversely, Eusebius of Nicomedia espoused a more moderate position, characterized by sympathy toward Arianism. The interactions and conflicts between these two influential bishops further fueled the theological debates at the council.

The Final Outcome

Despite the controversies and conflicts that swirled within the Council of Nicaea, a consensus was eventually reached. The Nicene Creed, with its proclamation of Christ's consubstantiality with the Father, was adopted as the official statement of faith. Those bishops who refused to endorse the creed were subsequently exiled, marking a clear and definitive victory for Nicene orthodoxy.


The First Council of Nicaea occupies an indelible place in the annals of Christian history. It grappled with the Arian controversy, resulting in the formulation and endorsement of the Nicene Creed, a statement of faith whose enduring legacy reverberates through the corridors of time. The debates and controversies that animated the council's deliberations underscored the intricate theological landscape of the era and the profound divisions within the nascent Christian community. Ultimately, the Nicene Creed emerged as a potent symbol of unity and orthodoxy, setting a theological trajectory that would shape Christian belief for generations to come.


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