244. Commitment to ecumenism responds to the prayer of the Lord Jesus that “they may all be one” (Jn 17:21). The credibility of the Christian message would be much greater if Christians could overcome their divisions and the Church could realize “the fullness of catholicity proper to her in those of her children who, though joined to her by baptism, are yet separated from full communion with her”. We must never forget that we are pilgrims journeying alongside one another. This means that we must have sincere trust in our fellow pilgrims, putting aside all suspicion or mistrust, and turn our gaze to what we are all seeking: the radiant peace of God’s face. Trusting others is an art and peace is an art. Jesus told us: “Blessed are the peacemakers” (Mt 5:9). In taking up this task, also among ourselves, we fulfil the ancient prophecy: “They shall beat their swords into ploughshares” (Is 2:4).
 Second Vatican Council, Decree on Ecumenism Unitatis Redintegratio, 4.
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