The Malabar Coast of India had long been home to a thriving Christian community, known as the St. Thomas Christians. The community traces its origins to the evangelical activity of Thomas the Apostle in the 1st century. It is believed that these christians developed a cordial relationship with its sister churches in midle east as early as 5th century. Indian Christian community were initially part of the metropolitan province of Fars(500-800 AD), but were detached from that province in the 7th century, and again in the 8th, and given their own metropolitan bishop by the patriarch Ishoʿyahb III (Metropolitan v-thara d- kollah hendo)).Communications between Mesopotamia and India were not always good, however, and in the eighth century the patriarch Timothy I again detached India from Fars and created a separate metropolitan province for India(Beth Hindey).
The province of Fars, the historic cradle of Persian civilisation, was a metropolitan province of the Church of the East between the sixth and twelfth centuries. It was centered in what is now Fars Province, and besides a number of centres in Fars itself, the East Syrian ecclesiastical province also included a number of dioceses in Arabia and a diocese for the island of Soqotra.According to tradition, Christianity was brought to the Persian province of Fars (Syriac: Beth Parsaye, ܒܝܬ ܦܪܣܝܐ) by Persian merchants exposed to the teaching of the apostle Addai in Roman Edessa. This tradition, which rejected a significant role for the apostle Mari, widely credited with the evangelisation of the Mesopotamian provinces of the Church of the East, reflects a deep division within the Church of the East in the Sassanian period between its Syrian and Persian converts. The patriarchs of Seleucia-Ctesiphon frequently found it difficult to exert authority over the ecclesiastical province of Fars.
It was patriarch Ishoʿyahb III (649–59) who raised India to the status of a metropolitan province, probably because of the unsatisfactory oversight of the metropolitan Shemʿon of Fars. A number of letters from Ishoʿyahb to Shemʿon have survived, in one of which Ishoʿyahb complained that Shemʿon had refused to consecrate a bishop for ‘Kalnah’ (the ‘Calliana’ of Cosmas Indicopleustes), because the Indian Christians had offended him in some way.
In a letter of lshoyahb lll (647 or 650-657 A.D.) the Catholicose-patriarch of the Persian church. He reports that the metropolitan of Rev-Ardashir (in the Persian Gulf) Was responsible for the church in “India”, by which he meant a region extending “from the maritime borders of the Sassinid empire to the country called QLH which is at distance of 1,200 parasangs"
According to the fourteenth-century writer ʿAbdishoʿ of Nisibis, the patriarch Sliba-zkha (714–28) created metropolitan provinces for Herat, Samarqand, India and China. If ʿAbdishoʿ is right, India’s status as a metropolitan province must have lapsed shortly after it was created by Ishoʿyahb III(650). An alternative, and perhaps more likely, possibility, is that Sliba-zkha consecrated a metropolitan for India, perhaps in response to an appeal from the Indian Christians, to fill the place of the bishop sent there by Ishoʿyahb half a century earlier.
Mar Sabor and Mar Proth (real names may be Mar Sabor and Mar Proth or Mar Sapir Proth or Mar Prodh (ca. 849) were two Monks who build and ruled many churches in Travancore and Malabar. 825 AD, Maruvan Sapir Eso, a successful merchant from Persia crossed the seas to reach Quilon. Along with him came Mar Aproth and Mar Sapor with a group of Christians probably fleeing after the growing Islamic threat in their home country , two bishops representing the Persian Christians.
The book Pahlavi inscription around a 8th century cross when translated is,
”I, the beautiful bird of Nineveh has come to this land. Written by me Shapper, who was saved by the Holy Messiah from misery.”
The book Pahlavi inscription around another 8th century cross when translated is,
“My Lord Christ, have mercy upon Afras son of Chaharbukht the Syrian, who cut this (or, who caused this to be cut).”