COMMENTARY: The first ecumenical council made a landmark profession of Christ’s divine identity that continues to anchor the ...

The first non-European successor of Saint Peter, Francis was also the first pope of the post-Vatican II era who had not participated in an ecumenical council ... This definition lies at the ...

“The importance of Ut unum sint is that it builds on the Second Vatican Council’s decree on ecumenism, Unitatis redintegratio ...

Convened by Emperor Constantine, the first ecumenical council established Christianity's core doctrines, including the doctrine of the Trinity and the date for Easter. Pope Francis has already ...