He co-authored many letters, homilies and theological essays. At a local Synod in Cairo , he condemned the Latin propaganda against the Christians of Egypt.  He approached the Protestant Christians of the West, in order to restrain the activities of proselytism of the Roman Catholic monks. He was later condemned for these actions by the former Patriarch of Constantinople, Timothy II. In 1612, he was elected “Supervisor” of the Ecumenical Patriarchate. He saw to more general inter-Christian and inter-Church issues. He was elected Patriarch of Constantinople in 1620.