The answer
Didascalia originally written in Greek was lost. What we have today are several manuscripts varying in length, the shortest being the Latin version and the longest the 'Apostolical constitutions' and in between, manuscripts in Syriac, Arabic and Ethiopian.In "The Apostolic Constitutions, The Didascalia" published in Arabic Dr. William Selim Kelada wrote a lengthy introduction of the origin of the book. He mentions two Arabic versions of the Didascalia. The first (A) is translated from the Coptic, which in turn was translated from the Greek and is the origin of the present Ethiopic version. The second (B) is an Arabic version translated from the Syriac. In his book, Dr. Kelada compiled the text of the first version (A) plus an Appendix containing the parts of the second version (B) not present in the first.
Ebn Kabr also referred to two versions of Didascalia without reservation. Since we do not have the original Greek, I think this book would be good to translate since it combines all the manuscripts.
Answered by His Eminence Metropolitan Youssef (opens in a new tab)