Zanzalus, Jacob (called also Baradaeus), a monk of the 6th century, became conspicuous by reviving the Monophysite (q.v.) sect of the Eutychians (q.v.). They had been reduced to a very small number, but these had ordained Zanzalus bishop of Edessa,'and by his zeal and unceasing toil he left the sect, at his death in A.D. 588, in a flourishing condition in Syria, Mesopotamia, Armenia, Egypt, and other countries. These are known as Jacobites (q.v.).