Ephrem of Nisibis was a teacher, poet, orator, and defender of the faith, and the foremost Christian theologian who wrote in the Syriac language. The Syrians called him “The Harp of the Holy Spirit,” and his hymns still enrich the liturgies of the Syriac churches. Ephrem was one whose writings were influential in the development of Christian doctrine. Jerome writes: “I have read in Greek a volume of his on the Holy Spirit, and though it was only …