“These ardent missionaries reached all parts of the Continent of Asia; their bishoprics were established in Kambaluk (Pekin), Kashgar and Ceylon; they penetrated also into Tartary and Arabia. Their churches came to include the greater part of the population in Syria, Irak, and Khorasan, in some districts adjoining the Caspian, and among some of the Mongol tribes. They translated the Scriptures into several languages. There is a record from the ninth or tenth century of their having translated the New Testament into Sogdianese, an Indo-Iranian language.”