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Pope Leo XIV Commemorates 1,700-Year Legacy of the Council of Nicaea in İznik

Pope Leo XIV gathered in İznik with 27 church leaders to mark the 1,700th anniversary of the First Ecumenical Council at the historic underwater basilica, highlighting its religious and ecumenical significance.

November 28, 2025Clash Report

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Pope Leo XIV and Ecumenical Patriarch Bartholomew conducted a joint liturgy in Nicaea.

Continuing his Apostolic journey in Turkey, Pope Leo XIV addressed thousands at a historic gathering in İznik to commemorate the 1,700th anniversary of the First Council of Nicaea, a foundational moment in early Christian history. A special platform was built at the basilica on the shores of the lake, and the ceremony was attended by thousands of local and international visitors under strict security measures.

Historic gathering in Nicaea

Pope Leo XIV met in İznik with 27 church leaders to mark the 1,700th anniversary of the First Ecumenical Council, held in 325 AD. In his speech, he thanked Ecumenical Patriarch Bartholomew I of Istanbul for his “great wisdom and foresight,” emphasizing that the call for unity is particularly crucial in today’s world of conflict and polarization.

During the mass, the Pope read passages from the Bible, highlighting the significance of the Nicene Creed in shaping early Christian beliefs. Ecumenical Patriarch Bartholomew also delivered a speech promoting unity within the Christian world.

Intense security and public interest

Thousands attended the mass at the basilica, which featured a special platform over its underwater remains. Approximately 2,500 police officers and numerous gendarmes were deployed to the area. Both local and international visitors watched the ceremony closely, making the event a historically significant moment for both religious and cultural reasons.

“The Dignity Of All People Must Be Protected”

Pope Leo XIV emphasized the importance of Christian unity in a world full of violence and conflict. “Regardless of ethnicity, nationality, religion, or personal beliefs, the rights and dignity of all people must be recognized,” the Pope stated, calling for global solidarity.

He also said, “This country has inseparable ties with the roots of Christianity,” describing Turkey as “a crossroads of sensitivities.”

Meeting With Clergy In Istanbul

In the Istanbul leg of his visit, the Pope met with clergy at the Holy Spirit Cathedral. Arriving under tight security, he was welcomed with flowers at the entrance and waved to the following visitors. He then entered the cathedral and met with the clergy.

At the podium, the Pope spoke with the congregation and participated in prayers. After completing the program at the cathedral, he proceeded to the French Hospice before taking a helicopter to İznik.

Pope Leo XIV Commemorates 1,700-Year Legacy of the Council of Nicaea in İznik