Getty Images Since the 14th century, Catholics have been celebrating the Sunday after Pentecost in honor of the Most Holy ...

An ancient mosaic dating back to the time of Jesus was discovered in the district of İznik, Turkey, ahead of Pope Leo XIV's ...

Pentecostals and ecumenicals, often perceived as distant from each other, have met during the Pentecostal World Conference in ...

The bus speeds past sun-drenched olive groves on its way to the small rural town of Iznik, in Turkey’s Bursa province, two and a half hours from Istanbul. Iznik—once known as Nicaea—still ...

For three months in 325 CE, Emperor Constantine gathered hundreds of bishops from across the empire in Nicaea, on the northern coast of what is now Turkey. The resulting statement of belief—the ...

By celebrating together this Nicene faith and by proclaiming it together, we will also advance towards the restoration of full communion among us.” ...

Christian unity will not be “primarily the fruit of our own efforts, nor will it be realized through any preconceived model ...

On Sunday, Ecumenical Patriarch Bartholomew I presided over a liturgy in Istanbul to mark the 1,700th anniversary of the ...

Next summer these United States will celebrate our 250th birthday which is quite an accomplishment for what Abraham Lincoln called this, “… new nation, conceived in liberty, and dedicated to ...

Many sacred beliefs of our Catholic faith can be traced to the 21 ecumenical councils held since the fourth century.

The first ecumenical council, known as the Council of Nicaea, is still accepted as authoritative by the Catholic Church, the ...

Historians have chosen the year of the fall of Constantinople to the Ottomans, 1453, as a reference point to mark the end of ...