The Church Fathers · c. 170
The Diatessaron
Tatian · c. 120–c. 180
What it is
The four gospels woven into a single continuous narrative, with the overlaps removed.
Why it lasted
The standard gospel text of the Syriac-speaking church for over two centuries, and the first harmony in a tradition that has never stopped producing them.
Scripture it works from
Where to read it
This work is in the public domain and can be read in full, free, at the archives below. The Library catalogues it; it does not host the text.
These open a search on each archive rather than a direct link, which is the honest way to point at an edition nobody here has checked line by line.
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