Pope Leo XIV Advocates for Unity at Historic Nicaea Site

On his inaugural foreign trip, Pope Leo XIV visited the historic site of the First Council of Nicaea in Iznik, Turkey, where early Christian leaders convened 1,700 years ago. During this significant visit, he prayed alongside Ecumenical Patriarch Bartholomew, the spiritual leader of the Eastern Orthodox Church, in the ruins of the lakeside church where bishops gathered in 325 AD to address critical divisions within the early Christian community.

Pope Leo took this moment to emphasize the need for unity among Christian denominations and across all religions. Speaking at the tranquil shores of Lake Iznik, he stated, “We must strongly reject the use of religion for justifying war, violence, or any form of fundamentalism or fanaticism.” He called for paths grounded in “fraternal encounter, dialogue and cooperation” to foster understanding and peace.

Historical Significance of Nicaea

The First Council of Nicaea, convened by Emperor Constantine, was pivotal in shaping Christian doctrine and unifying the Church following centuries of persecution. For approximately 250 years, Christians faced oppression until Constantine’s decree allowed them to worship freely across the Roman Empire. The council addressed a doctrinal crisis concerning the nature of Jesus Christ and his relationship to God, primarily sparked by the teachings of Arius, an Alexandrian priest. Arius claimed that Jesus, while exalted, was a created being and not equal to God.

The bishops at Nicaea ultimately rejected Arius’s teachings, affirming that Jesus is “of one substance” with the Father. This declaration laid the foundation for the Nicene Creed, which continues to be recited in Christian worship today, starting with the words: “I believe in one God, the Father almighty.”

The exact location of the council was only unearthed about 11 years ago, revealing ruins that had been submerged under approximately eight feet of water. According to Turkish archaeologist Mustafa Sahin, local swimmers often rest on the stones when water levels recede, allowing the full footprint of the basilica, including its apse and numerous graves, to emerge.

Pope’s Message on Unity

The unity of the Church remained largely intact until the Great Schism of 1054, which divided Catholic and Eastern Orthodox Christianity over theological disputes and power struggles between Rome and Constantinople, present-day Istanbul. At the Nicaea site, Pope Leo XIV and Patriarch Bartholomew held a joint silent prayer over the exposed ruins, symbolizing a contemporary effort to bridge divides.

In anticipation of this commemorative event, Pope Leo released an apostolic letter, highlighting the creed as a “common heritage of Christians,” crafted during a time when the scars of persecution were still very fresh. On the following day, the Pope and the Patriarch are scheduled to sign a joint declaration, marking a significant step towards fostering unity in the Christian faith.

Pope Leo’s visit not only commemorates a pivotal moment in Christian history but also serves as a clarion call for peace and solidarity in a world increasingly marked by division. His message resonates as a reminder of the enduring need for dialogue and cooperation among diverse faiths and communities.