Decree on Ecumenism · promulgated by Pope Paul VI, 21 November 1964

INTRODUCTION

  1. The restoration of unity among all Christians is one of the principal concerns of the Second Vatican Council. Christ the Lord founded one Church and one Church only. However, many Christian communions present themselves to men as the true inheritors of Jesus Christ; all indeed profess to be followers of the Lord but differ in mind and go their different ways, as if Christ Himself were divided.(1) Such division openly contradicts the will of Christ, scandalizes the world, and damages the holy cause of preaching the Gospel to every creature.

But the Lord of Ages wisely and patiently follows out the plan of grace on our behalf, sinners that we are. In recent times more than ever before, He has been rousing divided Christians to remorse over their divisions and to a longing for unity. Everywhere large numbers have felt the impulse of this grace, and among our separated brethren also there increases from day to day the movement, fostered by the grace of the Holy Spirit, for the restoration of unity among all Christians. This movement toward unity is called “ecumenical.” Those belong to it who invoke the Triune God and confess Jesus as Lord and Savior, doing this not merely as individuals but also as corporate bodies. For almost everyone regards the body in which he has heard the Gospel as his Church and indeed, God’s Church. All however, though in different ways, long for the one visible Church of God, a Church truly universal and set forth into the world that the world may be converted to the Gospel and so be saved, to the glory of God.

The Sacred Council gladly notes all this. It has already declared its teaching on the Church, and now, moved by a desire for the restoration of unity among all the followers of Christ, it wishes to set before all Catholics the ways and means by which they too can respond to this grace and to this divine call.

CATHOLIC PRINCIPLES ON ECUMENISM

  1. What has revealed the love of God among us is that the Father has sent into the world His only-begotten Son, so that, being made man, He might by His redemption give new life to the entire human race and unify it.(2) Before offering Himself up as a spotless victim upon the altar, Christ prayed to His Father for all who believe in Him: “that they all may be one; even as thou, Father, art in me, and I in thee, that they also may be one in us, so that the world may believe that thou has sent me”.(3) In His Church He instituted the wonderful sacrament of the Eucharist by which the unity of His Church is both signified and made a reality. He gave His followers a new commandment to love one another,(4) and promised the Spirit, their Advocate,(5) who, as Lord and life-giver, should remain with them forever.

After being lifted up on the cross and glorified, the Lord Jesus poured forth His Spirit as He had promised, and through the Spirit He has called and gathered together the people of the New Covenant, who are the Church, into a unity of faith, hope and charity, as the Apostle teaches us: “There is one body and one Spirit, just as you were called to the one hope of your calling; one Lord, one faith, one Baptism”.(6) For “all you who have been baptized into Christ have put on Christ… for you are all one in Christ Jesus”.(7) It is the Holy Spirit, dwelling in those who believe and pervading and ruling over the Church as a whole, who brings about that wonderful communion of the faithful. He brings them into intimate union with Christ, so that He is the principle of the Church’s unity. The distribution of graces and offices is His work too,(8) enriching the Church of Jesus Christ with different functions “in order to equip the saints for the work of service, so as to build up the body of Christ”.(9)

In order to establish this His holy Church everywhere in the world till the end of time, Christ entrusted to the College of the Twelve the task of teaching, ruling and sanctifying.(10) Among their number He selected Peter, and after his confession of faith determined that on him He would build His Church. Also to Peter He promised the keys of the kingdom of heaven,(11) and after His profession of love, entrusted all His sheep to him to be confirmed in faith(12) and shepherded in perfect unity.(13) Christ Jesus Himself was forever to remain the chief cornerstone(14) and shepherd of our souls.(15)

Jesus Christ, then, willed that the apostles and their successors - the bishops with Peter’s successor at their head - should preach the Gospel faithfully, administer the sacraments, and rule the Church in love. It is thus, under the action of the Holy Spirit, that Christ wills His people to increase, and He perfects His people’s fellowship in unity: in their confessing the one faith, celebrating divine worship in common, and keeping the fraternal harmony of the family of God.