Byzantine period The monastery was founded by
Sabbas the Sanctified in 483 on the eastern side of the Kidron Valley, where, according to the monastery's website, the first seventy hermits gathered around the hermitage of St Sabbas. Later on, the laura relocated to the opposite, western side of the gorge, where the Church of
Theoktistos was built in 486 and consecrated in 491 Between the late eighth to the tenth century, the monastery was a major translation center for Greek works into Arabic. For instance, Yannah ibn Istifan al-Fakhuri (fl. 910) translated works of
Leontius of Damascus and
Barsanuphius of
Gaza. Mar Saba was the home of the famous
Georgian monk and scribe
John Zosimus, who moved before 973 to
Saint Catherine's Monastery, taking several parchment manuscripts with him. The community seems to have also suffered under the persecutions of non-Muslims of the
Fatimid caliph al-Hakim bi-Amr Allah in 1009 as well as
Turkmen raids in the 11th century, but experienced occasional phases of peace as can be seen by the continued scribal and artistic activities.
Crusader period The monastery kept its importance during the existence of the Catholic
Kingdom of Jerusalem established by
Crusaders in 1099.
Mamluk and Ottoman periods Like the other Palestinian monasteries, the monastery experienced a period of decline in the late medieval period as a result of
Mamluk persecutions, the
Black Death, demographic and economic degradation and the expansion of nomadic tribes. Whereas the Russian monk Zosimus estimated in 1420 the number of inhabitants at 30, the German traveler
Felix Fabri recorded in the early 1480s, only six who were living together with a group of nomadic Arabs. Thereafter, the monastery was abandoned, and the remaining monks seem to have moved to
Saint Catherine's Monastery in the Sinai. In 1504, the Serbian monastic community of Palestine, based out of the fourteenth century
Monastery of Holy Archangels, purchased Mar Saba. The Serbs controlled the monastery until the late 1630s, and the significant financial support the monastery received from the
Tsar of the
Russian Empire allowed them to run the monastery semi-independently from the
Patriarchate of Jerusalem, the monastery's nominal overseer (much to the vexation of the patriarchate). The Serbs' control of Mar Saba allowed them to play an important role in the politics of the Orthodox Church of Jerusalem, often siding with the Arabic laity and priests against the Greeks who dominated the episcopate. Serbian control of the monastery eventually ended in the 1600s when the monastery got into massive debt due to the simultaneous combination of a massive building program at the monastery and a cutting off of financial support from Russia due to the outbreak of the
Time of Troubles. The Serbs were forced to sell the monastery to the Patriarch of Jerusalem to pay off their debts. ==Significance==