ROME — The Council of Nicaea 1,700 years ago recognized that Christian unity had to be based on a common faith and should be ...

The Council of Nicaea 1,700 years ago recognized that Christian unity had to be based on a common faith and should be demonstrated by a common celebration of Easter, the most sacred feast of the ...

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

Christian leaders stress that the council and its anniversary still have relevance in the modern day, despite theological ...

At the headquarters of the Ecumenical Patriarchate in Istanbul, Orthodox clergy and faithful welcomed the May 8 election of Pope Leo XIV, hoping he would build on the ecumenical progress made by his ...

Following President Trump’s announcement that Ukraine and Russia will begin immediate ceasefire talks, it remains to be seen whether Vladimir Putin will negotiate in good faith or if he is biding his ...

Robert Prevost, a native of Chicago, is a missionary who spent his career ministering in Peru and leads the Vatican’s office of bishops.

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

Muriel Spark, then a 36-year-old divorcee recovering from a mental breakdown, was received into the Roman Catholic Church at ...

The tradition of icon painting began to develop simultaneously with the development of Christianity. In the modern era, avant ...

who is a theologian venerated in both the Catholic Church and Orthodox churches, especially in Syriac Christianity. Pope Leo said: “Together, we can pray with St. Ephrem the Syrian and say to ...