The Catechism of the Catholic Church calls the Trinity the “ central mystery of the Christian faith .” That is, it’s the divine mystery making all other sacred mysteries saving mysteries for us. No ...

This coming Sunday is Trinity Sunday, a day in the Christian calendar when many churches celebrate and reflect on a core doctrine of the Christian faith, that God is Triune, three persons (Father, Son ...

If the Father and the Son were too unified ... It predates the schisms that eventually separated the various branches of Orthodox Christianity from Roman Catholicism. Prior to his death, Pope ...

Pope Leo XIV greets Orthodox Metropolitan Emmanuel of Chalcedon, a bishop of the Orthodox Ecumenical Patriarchate, during a ...

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

Pope Leo XIV meets with participants in the Symposium “Nicaea and the Church of the Third Millennium: Towards ...

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

By Cindy Wooden, Catholic News Service The Council of Nicaea 1,700 years ago recognized that Christian unity had to be based ...

That council represents a fundamental stage in the development of the creed shared by all the Churches and ecclesial ...

As Pope Leo XIV highlights the need for interreligious dialogue and diplomacy, religious liberty in Russia continues to ...