In this two-part work, originally published in 1909, John Gwynn presented a small collection of New and Old Testament Syriac biblical texts, drawn from the Philoxenian and Syro-Hexaplar versions. Both parts are composed of Syriac and Greek texts and accompanied by Gwynn’s extensive notes.

Published in 1897, John Gwynn’s, The Apocalypse of St. John in a Syriac Version Hitherto Unknown, was the first Syriac book issued from the Dublin University Press. It is based on his study of a manuscript obtained on loan from the personal library of the Earl of Crawford.