Redemptoris Mater §30

³⁰ Christians know that their unity will be truly rediscovered only if it is based on the unity of their faith. They must resolve considerable discrepancies of doctrine concerning the mystery and ministry of the Church, and sometimes also concerning the role of Mary in the work of salvation. The dialogues begun by the Catholic Church with the Churches and Ecclesial Communities of the West are steadily converging upon these two inseparable aspects of the same mystery of salvation. If the mystery of the Word made flesh enables us to glimpse the mystery of the divine motherhood and is, in turn, contemplation of the Mother of God brings us to a more profound understanding of the mystery of the Incarnation, then the same must be said for the mystery of the Church and Mary's role in the work of salvation. By a more profound study of both Mary and the Church, clarifying each by the light of the other, Christians who are eager to do what Jesus tells them-as their Mother recommends (cf. Jn. 2:5)- will be able to go forward together on this "pilgrimage of faith." Mary, who is still the model of this pilgrimage, is to lead them to the unity which is willed by their one Lord and so much desired by those who are attentively listening to what "the Spirit is saying to the Churches" today (Rev. 2:7, 11, 17). Meanwhile, it is a hopeful sign that these Churches and Ecclesial Communities are finding agreement with the Catholic Church on fundamental points of Christian belief, including matters relating to the Virgin Mary. For they recognize her as the Mother of the Lord and hold that this forms part of our faith in Christ, true God and true man. They look to her who at the foot of the Cross accepts as her son the beloved disciple, the one who in his turn accepts her as his mother. Therefore, why should we not all together look to her as our common Mother, who prays for the unity of God's family and who "precedes" us all at the head of the long line of witnesses of faith in the one Lord, the Son of God, who was conceived in her virginal womb by the power of the Holy Spirit?