"Diatessaron" literally means "Through four" but it also has the musical meaning of "Harmony." Tatian published his work around 150 AD and so the Diatessaron can be considered the first harmony of the Gospels in history.
The work of Tatian can be criticized or praised, but its philological value can hardly be underestimated. At the same time it is an interesting witness to the authority and text of the four canonical Gospels.
This precious annotated edition will be useful both for the interested reader and the scholar.