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Ordo Arcanorum Gradalis (OCCA) - Western Rites

(Celtic, Sarum, and Gallican Rites), 2428 Concord • Flint, MI 48504 • United States • • Orthodox

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Description of Ministry & Our Heritage

We are an open,inclusive,and affirming community who accepts all of God's children at the table of brotherhood. An emphasis,in the Ordo Arcanorum Gradalis is palced on the study of Celtic Christianity; Celtic Christian Prayers and Blessings; and the Celtic Saints. We hold, as essential to Orthodox Catholic Tradition, belief in the tenents of the faith as expressed in the Nicene and Apostles Creeds, the teachings of the Ecumenical Councils of the Undivided Church, the effiacy of the seven sacraments of the Church, the sufficiency of Sacred Scripture interpreted by tradition, scholarship and reason, and the principle of Apostolic Succession as the means of transmutting the historic ministries of deacon, priest(presbyter) and bishop. We hold to the acient principle of the collegiality of bishops and recognize the special positon of the Bishop of Rome as "first among equals" with all other bishops, holding primacy of honor, but not primacy of jurisdiction over the entire Church.

Jurisdiction Affliation & Futher Information

We are a Religious Order attached to the Western Rites Vicariate of the Orthodox Catholic Church of the Americas. For general information about our beliefs, rites, doctrines, history, places and times of worship email us, write us by letter or visit us. For information about memebership, avaliability of the Sacraments; training for the priesthood, incardination of suitable clergy, and vocations to the Religious Life contact us by email or in person. To find out about our presence on either continents (such as Europe) and in other countries or to discuss pastoral or other concerns email us. In Peace and Love of Our Lord.

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Our Services & Events

Vigils-Matins (Invitatory)

6:00 AM Weekdays

Lauds (Morning Prayer)

6:30 AM Weekdays

Terce (Midmorning Prayer)

9:00 AM Weekdays

Sext (Midday Prayer)

12:00 PM Weekdays

None (Midafternoon Prayer)

3:00 PM Weekdays

Vespers (Evening Prayer)

6:00 PM Weekdays

Our Staff

Rt. Rev'd. Brendan Hamacher OSB, OAG


Sr. Brigit (Allison Hammacher OSB, OAG


Rev. Angus MacGregor OSB, OAG


Sr. Gwendolyn Hammacher OSB, OAG


Rt. Rev'd. Eugene R Hammacher OSB, OAG