“The Church is seen primarily as a place of encounter, where God is not so much learned about as met, and where human lives are brought into an ecclesia, a community, of relation to this encountered God. At the beginning of its main service, the Divine Liturgy, the deacon proclaims to the celebrant bishop the intention of the Church’s work: ‘Master, it is time for the Lord to act.’ (cf. Ps. 118 : 126] – announcing an act that culminates in the eucharistic encounter of the communicant faithful with the body and blood of Christ.
This focus on encounter establishes the nature of the church as intrinsically sacramental. The sacraments stand at the centre of the Church’s life and mission, not because of a symbolic significance or merit of ritual, but because in each sacrament the person is drawn farther into the encounter with God which transforms and transfigures.
…The perception of the Church as, above all, a living organism, Christ’s very body into which his creation is drawn through encounter and relation, rather than an institution or complex that can be neatly defined.”
(Mary B. Cunningham, The Cambridge Companion to Orthodox Christian Theology, pp. 121-122)