𝐏𝐨𝐩𝐞, 𝐎𝐫𝐭𝐡𝐨𝐝𝐨𝐱 𝐋𝐞𝐚𝐝𝐞𝐫 𝐂𝐞𝐥𝐞𝐛𝐫𝐚𝐭𝐞 𝟏,𝟕𝟎𝟎 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐚𝐫𝐥𝐲 𝐂𝐡𝐮𝐫𝐜𝐡 𝐂𝐨𝐮𝐧𝐜𝐢𝐥

On Friday, Pope Leo XIV and Ecumenical Patriarch Bartholomew I came together in Iznik, Turkey, to mark the 1,700th anniversary of the First Council of Nicaea, a pivotal moment in early Christianity. The council, held in 325 AD under Emperor Constantine, established the Nicene Creed, a foundational statement of faith still recited by Christians worldwide. This historic event was the highlight of Pope Leo’s first overseas trip since his election in May 2025 ¹ ².

The commemoration included an ecumenical prayer service overlooking the ruins of a 4th-century basilica built on the site of the council. Patriarch Bartholomew emphasized the significance of unity, stating that in a world divided by conflict, the shared celebration with the pope reinforced the importance of Christians standing together. He added that the gathering at Nicaea was not only a reminder of shared faith but also a call for fraternity and mutual respect among all humanity ¹ ³.

Pope Leo’s visit is seen as a continuation of efforts to mend the historical rift between the Catholic and Orthodox Churches, which split in 1054 during the Great Schism. Although doctrinal differences persist, both leaders highlighted their commitment to dialogue and collaboration. They also signed a joint declaration reaffirming their shared faith and the desire to work toward greater unity among Christian denominations ⁴ ⁵.

While the celebration brought Catholic and Orthodox leaders together, the absence of Patriarch Kirill of the Russian Orthodox Church underscored ongoing tensions within the Orthodox world. The Russian Orthodox Church has been at odds with Constantinople since 2018, following the recognition of an independent Ukrainian Orthodox Church. Pope Leo carefully navigated these divisions, underscoring peace and reconciliation in his remarks ¹ ⁵.

The pope’s itinerary in Turkey also included a visit to Istanbul, where he met with Catholic leaders and celebrated Mass at the Cathedral of the Holy Spirit. His presence in Turkey, a predominantly Muslim nation with a small Christian minority, carried a message of hope and solidarity for local Christians. Pope Leo also used the opportunity to call for interfaith dialogue and peace in the region, particularly amid ongoing conflicts in Ukraine and Gaza ³ ⁶.

This joint celebration of the First Council of Nicaea is seen as a powerful symbol of Christian unity and a reminder of the shared heritage of Catholic and Orthodox traditions. As Pope Leo continues his journey to Lebanon, his messages of reconciliation and unity remain central to his papacy, offering hope for a future where Christian communities can overcome divisions and work together in faith ² ⁴ ⁵.