On 16 January 1994, Joseph Ramban was consecrated Metropolitan by Moran Mor Ignatius Zakka I Iwas, the Prince Patriarch of Antioch and All the East, at Damascus, for the Cochin Diocese in Malankara. Sunthroniso was held at Kyomtha Cathedral, Thiruvankulam on 23 January 1994 and assumed the office of the diocese. Joseph served as the president of Malankara Jacobite Syrian Sunday School Association (MJSSA) from 1996 till 2002.