Tur Abdin (Syriac: ܛܘܼܪ ܥܒ݂ܕܝܼܢ) is a hilly region situated in southeast Turkey, including the eastern half of the Mardin Province, and Şırnak Province west of the Tigris, on the border with Syria. The name 'Tur Abdin' is derived from Syriac, meaning "mountain of the servants (of God)". Tur Abdin is of great importance to Syriac Orthodox Christians, for whom the region used to be a monastic and cultural heartland. The Syriac community of Tur Abdin call themselves Suroye and Suryoye, terms which derive etymologically from the earlier Assurayu (see Etymology of Syria) and traditionally speak a central Neo-Aramaic dialect called Turoyo.
The town of Midyat and the villages of Hah, Bequsyone, Dayro da-Slibo, Salah (with the old monastery of Mor Yaqub), Iwardo (with Mor Huschabo), Anhel, Kafro, Arkah (Harabale, with Dayro Mor Malke), Beth Sbirino, Miden (Middo), Kerburan, Binkelbe with Mor Samun Zayte and Beth Zabday (Azech) were all important Syriac Orthodox places among with countless other villages. Hah has the ancient `Idto d'Yoldath-Aloho, the Church of the Mother of God.
In the 9th century BCE the Assyrian King Ashurnasirpal II described crossing the plateau of Tur Abdin (which he calls "Kashyari") on his way to attack the region of Nairi. Assyrian source from the 9th century BC; where it is called "Kashyari". In 586 B.C. the prophet Ezekiel mentions the famed wine of Izlo, on the southern edge of the plateau of Tur Abdin, in his prophecy against Tyre. The Mor Gabriel Monastery, the oldest Syriac (Syrian Orthodox) church in the world, was founded in 397 by the ascetic Mor Shmu'el (Samuel) and his student Mor Shem'un (Simon). According to tradition, Shem'un had a dream in which an Angel commanded him to build a House of Prayer in a located marked with three large stone blocks. When they Shem'un awoke, he took his teacher to the place and found the stone the angel had placed. At this spot Mor Gabriel Monastery built.