On our actual ecclesiological context, we descover situations which hurts the Church Tradiction, and, also Y. M.-J. Congar s conception of the Ecclesiology of Communion, which inheritance teach us that the Trinity is the original model, inspiration and finality of the Church; and that God, Unique in Three Persons is so, because, of the intratrinitarian relations between themselves, guaranteed by the Spirit of God. Departing from the trinitarian relational presuposition, we have tried to elaborate, reflecting on Congar s theology and on other authors too, a theological foundation which privileges a relational autonomy of the Trinitarian Persons as an ecclesiological paradign in order to articulate the desire of communional relations in the Church. The Church is a Mystery embeded in the Trinity and made visible to the world through its diverse structures, to which, by the Baptism, are incorporated members ontologically equals and ministerially different, both called to communion between themselves and God. Communion is celebrated, praised and nourished by the Eucharist and must be a service to the world, field of Church s mission and consecration, following Christ s example. The Church sent to the world as a sign of human salvation is composed by human beings, who are called to conversion. So, communion is in the Church, a new wine, fermented and tanned in wine-skins which we have tried to renew under the potency and dynamic of the Spirit of God.