He lived successively with the monks at the monastery of St. Theodosius southeast of Jerusalem, among the hermits in the Jordan Valley, and in the New Lavra of St Sabbas the Sanctified near Teqoa, east of Bethlehem.
In the 580s he returned to Egypt to meet refugees at a time when the Byzantine influence on the region had started to wane and where several monasteries in the Wadi El Natrun had been razed by Mazices where 3,500 monks who had lived there had now been dispersed into the Levant.
[1] He is the author of one of the earliest hagiological works, entitled in Greek Leimōn pneumatikos and known in Latin as Pratum spirituale ("Spiritual Meadow"), occasionally abbreviated "Prat.
[5][4] The work teems with miracles and ecstatic visions and it gives a clear insight into the practices of Eastern monasticism, contains important data on the religious cult and ceremonies of the time, and acquaints us with the numerous heresies that threatened to disrupt the Church in the East.
Conjointly with Sophronius, Moschus wrote a life of John the Almoner, a fragment of which is preserved in the first chapter of the "Vita S. Joanni Eleemosynarii" by Leontios of Neapolis, under the name of Simeon Metaphrastes (P.G., CXIV, 895-966).