Jacob Baradaeus was a 6th-century bishop of Edessa who played a vital role in the survival of non-Chalcedonian Christianity. Born in Mesopotamia around 505, he was raised in a monastery and dedicated his life to religious service. During a period of intense persecution for those opposing the Council of Chalcedon, he traveled extensively to ordain clergy and establish a formal ecclesiastical structure. His tireless missionary work across Syria, Egypt, and Anatolia helped preserve the non-Chalcedonian tradition, which later became known as the Syriac Orthodox Church.