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Matthew Olver
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Rev. Dr. Matthew S. C. Olver is the Executive Director and Publisher of the Living Church Foundation. A priest since 2006, he was the assistant rector at Church of the Incarnation, Dallas, TX, and has served widely in the Episcopal Church in diocesan, national, and international capacities. He is a liturgical...
Updated 08/01/2026
see moreRobert Ombres
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Fr. Robert Ombres, former Procurator General of the Order of Preachers, lives and teaches at Blackfriars, Oxford and at the Pontifical University of St. Thomas Aquinas (Angelicum) in Rome. (Source and photo: english.op.org)
Updated 08/01/2026
see moreThomas Jay Oord
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Dr. Thomas Jay Oord is a theologian, philosopher, and scholar of multi-disciplinary studies. He directs the Center for Open and Relational Theology and doctoral students at Northwind Theological Seminary. He is an award-winning author and has written or edited more than twenty-five books. A gifted speaker, Oord lectures at universities,...
Updated 08/01/2026
see moreArlene Oost-Zinner
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Arlene Oost-Zinner is a Catholic writer and liturgist. She was formerly conductor of the chant schola at St. Michaels Catholic Church in Auburn, AL, and director of programs for the Church Music Association of America. She is composer of the popular English Responsorial Psalms, has taught chant at all levels for the...
Updated 08/01/2026
see moreAmanda Opelt
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Amanda Held Opelt is an author, speaker, and songwriter whose work explores faith, grief, creativity, community, and storytelling. She graduated from Bryan College and Appalachian State University. With 15 years of experience in nonprofit and humanitarian aid organizations, she brings professional experience in service and community-focused work to her writing...
Updated 10/08/2026
see moreOrdinary Time
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Ordinary Time is an independent folk acoustic trio rooted in the Christian tradition. Comprised of Ben Keyes, Peter La Grand, and Jill McFadden, Ordinary Time presents extraordinarily rich vocal harmonies, skillful instrumentation, and thought-provoking lyrics. The band's oeuvre seamlessly weaves the hymns of generations past with their own new songs"often...
Updated 08/01/2026
see moreEsau Oreso
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Esau Oreso lives in Nairobi, Kenya. He is the Leadership Training Director at the Center for Transforming Mission Kenya/Nairobi which is part of the Leadership Foundations movement. Esau is also the lead Pastor of the Tumaini Ministries Center in Kibera, a church he founded and has served for 19 years....
Updated 08/01/2026
see moreDeborah Organ
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Deborah Organ is Senior Adjunct Faculty and Director of Lay Ministry Program at the University of St. Thomas in St. Paul, MN. Her background is in Clinical Social Work and theology, and she has enjoyed learning from and working with Spanish speaking people from many countries in Latin America for more than 40 years....
Updated 08/01/2026
see moreOrigen
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Origen of Alexandria (c.185-c. 253), also known as Origen Adamantius, was an early Christian scholar, ascetic, and theologian who was born and spent the first half of his career in Alexandria. He was a prolific writer who wrote roughly 2,000 treatises in multiple branches of theology, including textual criticism, biblical...
Updated 08/01/2026
see morePietro Orioli
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Pietro di Francesco degli Orioli (c. 1458–1496) was a Sienese Renaissance painter trained under Matteo di Giovanni and associated with artist Francesco di Giorgio. Active independently from around 1480, he contributed significantly to the Sienese artistic tradition. His documented works include Christ Washing the Feet of the Apostles (1489), Sulpitia...
Updated 10/12/2026
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