Monk Eustace's Kitab Bayaan

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Abigail Bernard

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Sep 13, 2025, 12:34:20 PMSep 13
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Dear Nascas, 
Hope you are all well! I came across this reference to a book of which I can find no other references elsewhere in La Trinité Divine Chez Les Théologiens Arabes by Rachid Haddad: 
"Collaboratuer de Ya'qub Ibn Ishaq al-Kindi (m. 873?) Eustathe (m. avant 850), moine jacobite peu connu, a composé une Epître intitulée Livre de l'Eclaircissement [كتاب البيان], en 4 parties. Il l'a adressée à un philosophe qui lui avait montré, en une lettre, la supériorité du monothéisme des Juifs et des Musulmans sur la Trinité chrétienne. Eustathe lui espose et prouve sa foi en la Trinité." (pg. 40)
It seems based on the footnotes that it is mentioned in Al-Fihrist, and there is a book in German written on it: Der Katalog der christlichen Schriften in arabischer Sprache by Abu L-Barakat, which I cannot find.
Any help is welcome!
Thank you!
Abigail 

Alexander Treiger

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Sep 14, 2025, 8:12:46 PMSep 14
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Dear Abigail,
The attached article by Mark Swanson will answer your questions.
There is also another article by Barbara Roggema; an excerpt is available online:

I'm not sure this Eustathius (Ustath) is identical to the Ustath who worked for al-Kindi. Most likely, these are two different individuals.
Best wishes,
Alexander

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swanson_eustathius.pdf

Mark Swanson

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Sep 16, 2025, 1:34:11 PMSep 16
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Dear Abigail,

Attached is an article I wrote quite a few years ago for the journal of the St. Shenouda the Archimandrite Coptic Society. It might provide some orientation.

All the best,

Mark Swanson

From: nas...@googlegroups.com <nas...@googlegroups.com> on behalf of Abigail Bernard <abi...@thebernards.org>
Sent: Saturday, September 13, 2025 11:34 AM
To: North American Society for Christian Arabic Studies <nas...@googlegroups.com>
Subject: [nascas] Monk Eustace's Kitab Bayaan
 

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Swanson Ustath al-Rahib Coptica 1.pdf

Abigail Bernard

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Sep 16, 2025, 1:34:20 PMSep 16
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Thank you so much! Very much appreciated! 
Blessings, 
Abigail 

Abigail Bernard

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Sep 18, 2025, 10:43:47 AMSep 18
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Thank you so much!!
Blessings!
Abigail 

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