His most important work,Extracts of History (Ancient Greek:Ἐπιτομὴ Ἱστοριῶν,Latin:Epitome Historiarum), in eighteen books, extends from the creation of the world to the death of Alexius (1118). The earlier part is largely drawn fromJosephus; for Roman history he chiefly followedCassius Dio up to the early third century.[4] Contemporary scholars are particularly interested in his account of the third and fourth centuries, which depend upon sources, now lost, whose nature is fiercely debated. Central to this debate is the work of Bruno Bleckmann, whose arguments tend to be supported by continental scholars but rejected in part by English-speaking scholars.[5] An English translation of these important sections has recently been published.[6] The chief original part of Zonaras' history is the section on the reign ofAlexios I Komnenos, whom he criticizes for the favour shown to members of his family, to whom Alexios entrusted vast estates and significant state offices. His history was continued byNicetas Acominatus.
Various ecclesiastical works have been attributed to Zonaras — commentaries on theChurch Fathers and the poems ofGregory of Nazianzus; lives of Saints; and a treatise on theApostolic Canons — and there is no reason to doubt their genuineness. The lexicon, however, which has been handed down under his name (ed.J. A. H. Tittmann 1808) is probably the work of a certainAntonius Monachus (Stein'sHerodotus, ii.479 f).[4] The first ecclesiastical denunciation of the game ofchess on the part of theEastern Orthodox Church was voiced by Zonaras. It was during his retirement as a monk to the monastery ofMount Athos that he wrote his commentary on the canons of the Eastern Church. TheQuinisext Council required both clergy and laity to give up the use of dice (Canon 50). Zonaras wanted chess to also be included for clergy and laity to give up.
Zonaras, commenting on Canon 50, wrote, "Because there are some of the Bishops and clergy who depart from virtue and play chess (zatikron) or dice or drink to excess, the Rule commands that such shall cease to do so or be excluded; and if a Bishop or elder or deacon or subdeacon or reader or singer do not cease so to do, he shall be cast out: and if laymen be given to chess-playing and drunkenness, they shall be excluded."[7]
^Neville, Leonora Alice (2018).Guide to Byzantine historical writing. David A. Harrisville, Irina Tamarkina, Charlotte Whatley. Cambridge. pp. 193–194.ISBN978-1-139-62688-0.OCLC1039703373.{{cite book}}: CS1 maint: location missing publisher (link)
^Bleckmann,Die Reichskrise des III. Jahrhunderts in der spätantiken und byzantinischen Geschichtsschreibung : Untersuchungen zu den nachdionischen Quellen der Chronik des Johannes Zonaras. Munich, 1992.
Editio princeps:Ioannis Zonarae Monachi, qui olim Byzantii Magnus Drungarius excubiaru[m] seu Biglae, & protosecretarius fuit, compendium Historiarum : in tres Tomos distinctum. 3 vols., Greek text with Latin translation. Oporinus, Basel 1557.vol.1,vol. 2,vol.3 (Bavarian State Library)