Archaeologists Uncover Church Tied to Nicaea—Where Christianity Made a Historic Break From Its Jewish Roots

Key Facts

Published: August 10, 2026 Location: Iznik, Turkey Source: Fox News, Reuters, Eusebius of Caesarea — Life of Constantine, Christian Classics Ethereal Library historical documents

• Archaeologists in Iznik, Turkey, have uncovered remains of the ancient Church of St. Neophytos near the location traditionally associated with the First Council of Nicaea.
• The A.D. 325 Council of Nicaea established foundational Christian doctrine while also helping formally separate the Christian calculation of the resurrection celebration from the Jewish Passover calendar.
• The discovery is renewing attention on a pivotal era when Christianity moved from its predominantly Jewish and biblical setting toward the increasingly Roman institutional Church.

Ancient ruins in Turkey are bringing renewed attention to the Council of Nicaea, a gathering remembered for the Nicene Creed but also for a consequential decision separating the Christian observance of Messiah’s resurrection from the Biblical Jewish calendar.

by Emmitt Barry, Worthy News Washington D.C. Bureau Chief

IZNIK, TURKEY (Worthy News) – Archaeologists in modern-day Turkey have uncovered remains of an ancient church believed to be connected to the historic site where the First Council of Nicaea was held in A.D. 325, drawing fresh attention to one of the most consequential turning points in the history of Christianity.

The newly uncovered structure has been identified by excavation director Mustafa Şahin as the Church of St. Neophytos, an early Christian building near Lake Iznik in ancient Nicaea. Archaeologists uncovered a column base, walls, and sections of pavement belonging to the church during continuing excavations at the site.

Researchers believe the church was destroyed by an earthquake in A.D. 368 and was later replaced by another structure known as the Church of the Holy Fathers around A.D. 380.

The discovery is significant because Nicaea became the setting for the First Council of Nicaea, convened by Roman Emperor Constantine in A.D. 325. Hundreds of bishops gathered there to confront the Arian controversy concerning the nature of Jesus Christ and ultimately produced the theological foundation of what became known as the Nicene Creed.

But another decision made in connection with Nicaea would have enormous consequences for Christianity’s relationship with its Jewish and biblical foundations.

Nicaea and Christianity’s Growing Separation From Its Jewish Roots

The Council of Nicaea did not begin Christianity’s separation from Judaism—that process had already been underway for generations. Yet Nicaea became one of the defining institutional moments in which the increasingly Romanized Church deliberately separated its religious calendar from Jewish reckoning.

Early believers understood the death and resurrection of Yeshua (Jesus) within the Biblical framework of Passover. The Gospels themselves place the crucifixion and resurrection directly within the Passover season, while some early Christians continued observing the remembrance of Messiah’s death according to the Biblical date of Nisan 14, regardless of which day of the week it occurred.

That practice became known historically as Quartodecimanism.

At Nicaea, however, church leaders moved toward establishing a unified Christian observance of the resurrection independent of the Jewish calculation of Passover. The decision helped establish a distinctly Christian ecclesiastical calendar separated from the Jewish calendar from which the events themselves originated.

The surviving writings surrounding the council reveal how strong that separation had become.

In a letter issued following Nicaea, Constantine argued that Christians should no longer determine the celebration in connection with Jewish practice. Eusebius preserved Constantine’s letter in his Life of Constantine, documenting the emperor’s explicit desire to separate Christian observance from the Jewish people.

The language reflected more than a calendar dispute. It represented a profound shift in the identity of an increasingly imperial Christianity.

The faith that began in Jerusalem—with a Jewish Messiah, Jewish apostles, Jewish Scriptures, Biblical feasts and thousands of Jewish believers—was increasingly being interpreted through the religious and political culture of the Roman Empire.

Nicaea did not literally erase Christianity’s Jewish foundations; such a thing would have been impossible. The Old Testament remained Scripture. Jesus remained the Jewish Messiah. The apostles remained Jews, and the Gospel continued to emerge from the covenant story of Israel.

But Nicaea marked a defining point at which institutional Christianity formally moved away from one of its most visible Jewish connections—the Biblical calendar—and accelerated a centuries-long process in which much of the Church lost sight of the Hebraic context of its own faith.

What Began in Jerusalem Became Increasingly Roman

The earliest believers did not view Christianity as a detached Western religion. Yeshua celebrated the biblical feasts. His disciples worshiped in Jerusalem. Paul described believers from the nations as being grafted into Israel’s cultivated olive tree, warning Gentile Christians not to become arrogant toward the natural branches.

Yet as Christianity expanded throughout the Roman world and Jewish believers became an increasingly small minority, much of Christianity’s original cultural setting faded from church life.

By the fourth century, Christianity was moving from a persecuted faith toward an imperially favored religion—and Nicaea stood near the center of that transformation.

That makes the latest archaeological discoveries at Iznik especially remarkable.

Beneath the soil are the remains of churches from the generation in which Christianity was undergoing one of the greatest transformations in its history.

Seventeen centuries later, those stones are resurfacing.

And they point back to a critical question for Christians today: Can the Church fully understand the New Testament without recovering the Biblical and Jewish world in which it was written?

The Gospel does not belong exclusively to any ethnicity or nation. It was always intended to reach the ends of the earth. Yet its roots remain unmistakable: Jerusalem, Israel, the covenants, the prophets, the biblical feasts and Israel’s Messiah.

As Paul reminded Gentile believers nearly three centuries before Nicaea: “You do not support the root, but the root supports you.” — Romans 11:18

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