74 "Not every one who says to me, 'Lord, Lord', will enter the kingdom of heaven, but he who does the will of my Father who is in heaven" ( Mt 7:21). The consistency and honesty of intentions and of statements of principles are verified by their application to real life. The Council Decree on Ecumenism notes that among other Christians "the faith by which they believe in Christ bears fruit in praise and thanksgiving for the benefits received from the hands of God. Joined to it are a lively sense of justice and a true neighbourly charity". What has just been outlined is fertile ground not only for dialogue but also for practical cooperation: "Active faith has produced many organizations for the relief of spiritual and bodily distress, the education of youth, the advancement of humane social conditions, and the promotion of peace throughout the world". Social and cultural life offers ample opportunities for ecumenical cooperation. With increasing frequency Christians are working together to defend human dignity, to promote peace, to apply the Gospel to social life, to bring the Christian spirit to the world of science and of the arts. They find themselves ever more united in striving to meet the sufferings and the needs of our time: hunger, natural disasters and social injustice.
Source: Ut Unum Sint (Vatican.va)