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".125

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".¹²⁶

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.

75. For Christians, this cooperation, which draws its inspiration from the Gospel itself, is never mere humanitarian action. It has its reason for being in the Lord's words: "For I was hungry and you gave me food" (Mt 25:35). As I have already emphasized, the cooperation among Christians clearly manifests that degree of communion which already exists among them.127

Before the world, united action in society on the part of Christians has the clear value of a joint witness to the name of the Lord. It is also a form of proclamation, since it reveals the face of Christ.

The doctrinal disagreements which remain exercise a negative influence and even place limits on cooperation. Still, the communion of faith which already exists between Christians provides a solid foundation for their joint action not only in the social field but also in the religious sphere.

Such cooperation will facilitate the quest for unity. The Decree on Ecumenism noted that "through such cooperation, all believers in Christ are able to learn easily how they can understand each other better and esteem each other more, and how the road to the unity of Christians may be made smooth".¹²⁸

76. In this context, how can I fail to mention the ecumenical interest in peace, expressed in prayer and action by ever greater numbers of Christians and with a steadily growing theological inspiration? It could not be otherwise. Do we not believe in Jesus Christ, the Prince of Peace? Christians are becoming ever more united in their rejection of violence, every kind of violence, from wars to social injustice.