Beginning with the history of the formation of the first Christian churches, this work begins with an extensive source criticism of the text of Acts, a history of the Church of Jerusalem, and the organization and action of Paul's mission to the Gentiles.
Guidi, in this long article, presents an edition and thoroughly annotated Italian translation of the Syriac “Letter on the Himyarite Martyrs,” which deals with the persecution of Christians in Nagran, from author and bishop, Simeon of Beth Arsham.
In the present work, Scher covers the Syriac (and some Arabic) manuscripts then located at the Chaldean Patriarchal Library in Mosul, which possessed a broad and rich collection. An index of authors and anonymous works concludes the catalog.