Cyril's aim was to reform the Orthodox Church along Calvinistic lines, and to this end he sent many young Greek theologians to the universities of Switzerland, the northern Netherlands and England. In 1629 he published his famous "Confessio" (Calvinistic doctrine), but as far as possible accommodated to the language and creeds of the Orthodox Church. It appeared the same year in two Latin editions, four French, one German and one English, and in the Eastern Church it started a controversy which brought critics at several synods, in 1638 at Constantinople, in 1642 at the Synod of Iași, and culminated in 1672 with the convocation by Dositheos, Patriarch of Jerusalem, of the Synod of Jerusalem, by which the Calvinistic doctrines were condemned.