This raucous meeting, which took place exactly 1700 years ago, was one of the most important in Christian history.

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 ...

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

The Trinity will be celebrated by both Orthodox and non-Orthodox Christians ... following week and addresses the connection between the Father, Son and Holy Spirit, said the Rev. Jonathon Sawicki ...

The Orthodox faithful in Greece mark the Monday of the Holy Spirit, a public holiday, especially for schools and public ...

The People’s Republic of China has officially recognized Pope Leo XIV’s first bishop appointment, the Vatican announced, ...

Father John Whiteford ... of worshippers in America's evangelical megachurches, the numbers of Christian Orthodox are tiny - only about one percent of the population. That includes Eastern ...

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

One of the most important shifts in history was the spread of Christianity by the Greeks from the Byzantine Empire into ...

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