Istota eklezjologii pierwszego tysiąclecia w ujęciu prawosławnym i rzymskokatolickim w świetle dokumentu: „Synodalność i prymat w pierwszym Tysiącleciu: Ku wspólnemu rozumieniu w służbie jedności Kościoła”, Chieti 2016

This article consists of two parts. The first part presents the achievements of the Catholic-Orthodox dialogue which commenced in 1982. The second part contains a Polish translation of a document which was adopted at the 14th plenary session of the Catholic-Orthodox dialogue in Chieti in 2016. The first phase of the dialogue, which took place between 1982-2000, raised issues which are in essence common for both the Orthodox Church and Roman Catholic Church and in many aspects convergent. Starting in 2006, the Commission addressed the relations of synodality and primacy in the Church. The Chieti Document addresses the question of understanding primacy in the first millennium of the undivided Church. As the authors of this document point out, the history of this period should serve as a benchmark in the quest for Church unity in the future.