Julian entered the monastic order at the Monastery of Qinnesrin, from which he was also graduated after acquiring the knowledge of logic. He was a virtuous ascetic, a disciple and secretary of Peter III, patriarch of Antioch. He was chosen the successor of Peter III and was consecrated a patriarch of Antioch in 591. He administered the Church of God four years and two months and died on the ninth of July, 595.

According to Bar Hebraeus, who quoted old historians, Julian wrote a commentary on the above mentioned work of his predecessor, explaining its problems and dispelling the misgivings of Sergius the Armenian, metropolitan of Edessa, and his brother John, regarding it. In our Jerusalem library you will find a sixteen page booklet of his commentary which is deficient at the beginning and the end.

(History of Syriac Literature and Sciences, Patriarch Ignatius Ephrem I Barsoum, Presseggiata Press, p 103)