The institution may be traced to the beginnings of Christian monasticism in the 4th century. The original Greek term "geron" (meaning "elder", as in "gerontology") was rendered by the Russian word "starets", from Old Church Slavonic "starĭtsĭ", "elder", derived from "starŭ", "old". The Greek tradition has a long unbroken history of elders and disciples, such as Sophronius and John Moschos in the seventh century, Symeon the Elder and Symeon the New Theologian in the eleventh century, and contemporary charismatic "gerontes" such as Porphyrios and Paisios. Sergius of Radonezh and Nil Sorsky were two most venerated "startsy" of Old Muscovy. The revival of elders in the Slavic world is associated with the name of Paisius Velichkovsky (17221794), who produced the Church Slavonic translation of selected texts of the "Philokalia". The most famous Russian "starets" of the early 19th century was Seraphim of Sarov (17591833), who went on to become one of the most revered Orthodox saints.