Fr. Elias D. Mallon, SA, PhD, writes on the significance of this year’s 1700th anniversary

In recent weeks, members of Graymoor Ecumenical & Interreligious Institute (GEII) had the privilege of

Dr. Aaron Hollander, executive director of GEII, was interviewed by the Chicago Tribune for an

On May 13-14, GEII Executive Director Dr. Aaron Hollander joined the National Council of Churches

We are delighted to announce, in collaboration with the Ecclesiological Investigations International Research Network, the

On February 12, 2025, Graymoor Ecumenical & Interreligious Institute (GEII) hosted a group of leaders

Each year Christians gather worldwide to share Fr. Paul Wattson’s vision of “At-One-Ment” from January

Dr. Hollander, a native New Yorker and distinguished ecumenical theologian, is the first lay director

The First Council of Nicaea, convened in 325 AD by the Emperor Constantine I, inaugurated