sentences:  It already existed during the 6th century in the Patriarchate of Antiochia, before it became a main genre of the centers of an Octoechos hymn reform in the monasteries of Saint Catherine on Mount Sinai and Mar Saba in Palestine, where St. John Damascene (c. 676–749) and Cosmas of Maiuma created a cycle of "stichera anastasima".Probably for this reason John of Damascus is regarded as the creator the Hagiopolitan Octoechos and the Hagiopolites treatise itself claims his authorship right at the beginning.It has only survived completely in a 14th-century copy, but its origin dates probably back to the time between the council of Nicaea and the time Joseph the Hymnographer (~816-886), when the treatise could still have introduced the book Tropologion.