Abstract
The ideas of the Orthodox theologian Bishop John Zizioulas (1931–2023) particularly focus on trinitarian ecclesiology. For him, the Trinity consists of Persons in communion, and the nature of God himself is relational. Trinitarian unity is therefore the prototype, and the Church is its reflection. The essence of the Church is communion, which results from the fact that the Trinity is communion. Zizioulas’ view of the Church is steeped in a trinitarian perspective. Zizioulas pointed out that the Church is based on the double divine economy: the work of Jesus Christ and the work of the Holy Spirit. The relationship of the Holy Trinity with the Church also has consequences for the structure of the Church. In this way, the Church becomes hierarchical in the sense in which the Holy Trinity itself is hierarchical: because of the specificity of the relationship. Becoming a person means breaking down the barriers of individualism and entering into communion life. This is realized in the Church through Baptism and Eucharist. The aim of the article is therefore an attempt to present and evaluate John Zizioulas’ concept of trinitarian ecclesiology.