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Pope Leo XIV invokes Leo XIII as early champion of ecumenism
LifeSite News ^ | January 19, 2026 | Gaetano Masciullo

Posted on 01/19/2026 3:23:16 PM PST by ebb tide

Pope Leo XIV invokes Leo XIII as early champion of ecumenism

While Leo XIII’s push for Christian unity calls on adherence to Catholic doctrine and papal primacy, Leo XIV emphasizes an approach of ‘legitimate diversity’ rooted in the Nicene Creed.

Pope Leo XIV marked the start of the Week of Prayer for Christian Unity by invoking the legacy of Pope Leo XIII, whom he presented as an ecumenical forerunner.

On January 18, at the conclusion of the Angelus prayer in St. Peter’s Square at the Vatican, Pope Leo XIV announced the opening of the Week of Prayer for Christian Unity, encouraged Catholics to pray for full visible unity among Christians, and referred to Pope Leo XIII as a historical precursor who had promoted prayer for Christian unity.

“Today begins the Week of Prayer for the Unity of Christians,” Leo XIV declared, adding that “the origins of this initiative go back two centuries, and Pope Leo XIII encouraged it greatly,” before inviting Catholic communities to intensify prayer “for the full visible unity of all Christians.”

The Week of Prayer for Christian Unity begins annually on January 18. The theme for this year is taken from Ephesians 4:4: “One body and one Spirit, as one is the hope to which you were called.” The accompanying prayers and reflections prepared for the week have been coordinated by an ecumenical group under the Department for Interreligious Relations of the Armenian Apostolic Church.

The Pope’s reference to Leo XIII places the late 19th century pontiff within the historical narrative of prayer initiatives for Christian unity. Leo XIII, who reigned from 1878 to 1903, repeatedly encouraged prayers for unity and addressed the question of divisions among Christians in several major magisterial documents.

READ: Schism fears arise as Catholic Church in Germany aims to put laity on ‘same level’ as bishops

However, the intentions expressed by Leo XIII in his official teaching differed in emphasis from contemporary ecumenical approaches. In the encyclical Satis Cognitum about the unity of the Church, promulgated on June 29, 1896, Leo XIII taught that such unity is visible, grounded in shared faith, the sacraments, and governance. The document explicitly rejected the idea of an invisible or merely spiritual Church and affirmed that full unity requires adherence to the authority established by Christ.

In Satis Cognitum, Leo XIII wrote also that those who accept only parts of Christian doctrine according to personal preference “do not rely on faith, but on their own judgment,” insisting that authentic unity cannot be separated from the integrity of revealed doctrine. The encyclical presented the unity of the Church as inseparable from obedience to Christ and from communion with the See of Peter.

A similar missionary orientation appears in the apostolic letter Caritatis Studium, issued on July 25, 1898. In that document, Leo XIII addressed Anglicans directly, inviting them to reconciliation with Rome. He urged them to recognize the primacy of Peter and to acknowledge what he described as the orthodoxy of Catholic doctrine, while rejecting Protestant theological positions that had emerged after the Reformation. The letter framed unity as a return of separated Christians to full communion with the Catholic Church.

He wrote that his “ardent charity” for Christians outside Catholic communion compelled him “to bring back to the embrace of the Good Shepherd those whom manifold error causes to stand aloof from the one Fold of Christ,” explicitly describing separation as the result of doctrinal error.

Leo XIII further stated that he was “constantly imploring” Christians separated from the Church “to agree at last to restore together with Us the communion of the one and the same faith,” presenting unity as the recovery of a shared faith in communion with Rome. This understanding was inseparable from Leo XIII’s teaching on ecclesial authority, since, as he affirmed, “the supreme teaching authority was committed to one, on whom, as on its foundation, the Church must rest,” referring to the primacy given by Christ to St. Peter.

READ: Pope Leo XIV to return Holy Thursday liturgy to Lateran Basilica after Francis-era break

By contrast, Pope Leo XIV’s recent magisterial teaching situates unity within a contemporary ecumenical framework. In the apostolic letter In Unitate Fidei, issued in November 23, 2025, Leo XIV addressed the pursuit of Christian unity in the context of dialogue between Churches and ecclesial communities.

Pope Leo XIV presents an understanding of Christian unity that differs in approach from that articulated by Leo XIII at the end of the nineteenth century. While grounding ecumenical efforts in the shared profession of the Nicene-Constantinopolitan Creed, Leo XIV states that contemporary unity “does not imply an ecumenism that attempts to return to the state prior to the divisions,” explicitly distancing present initiatives from a model of reunion based on return. Instead, he describes an ecumenism that “looks to the future” and “seeks reconciliation through dialogue as we share our gifts and spiritual heritage.”

Within this framework, the Nicene Creed is proposed as “the basis and reference point” for the journey toward unity, offering “a model of true unity in legitimate diversity.” The Pope further calls on Christians to “leave behind theological controversies that have lost their raison d’être”, presumably like the Filioque controversy, in order to develop “a common understanding and even more, a common prayer to the Holy Spirit."

Finally, Leo XIV notes that ecumenical dialogue has already led Christians “to recognize the members of other Churches and ecclesial communities as our brothers and sisters in Jesus Christ,” affirming that, despite the absence of full visible unity, “what unites us is much greater than what divides us.”


TOPICS: Catholic; Current Events; Ecumenism; Theology
KEYWORDS: ecumania; ecumenismofreturn

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However, the intentions expressed by Leo XIII in his official teaching differed in emphasis from contemporary ecumenical approaches. In the encyclical Satis Cognitum about the unity of the Church, promulgated on June 29, 1896, Leo XIII taught that such unity is visible, grounded in shared faith, the sacraments, and governance. The document explicitly rejected the idea of an invisible or merely spiritual Church and affirmed that full unity requires adherence to the authority established by Christ.


1 posted on 01/19/2026 3:23:16 PM PST by ebb tide
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To: Al Hitan; Fedora; irishjuggler; Jaded; kalee; markomalley; miele man; Mrs. Don-o; ...

Ping


2 posted on 01/19/2026 3:24:54 PM PST by ebb tide (VC II's ecumania is not the Catholic ecumenism of return.)
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To: ebb tide

We believe in one God,
the Father, the Almighty,
Maker of all that is, seen and unseen.

We believe in one Lord, Jesus Christ,
the only Son of God,
eternally begotten of the Father,
God from God, Light from Light,
true God from true God,
begotten, not made, consubstantial
of one Being with the Father.

Through him all things were made.

For us men and for our salvation
he came down from heaven,
and by the Holy Spirit was incarnate of the Virgin Mary,
and became man.

For our sake he was crucified under Pontius Pilate;
he suffered death and was buried.

On the third day he rose again
in accordance with the Scriptures;
he ascended into heaven
and is seated at the right hand of the Father.

He will come again in glory to judge the living and the dead,
and his kingdom will have no end.

We believe in the Holy Spirit, the Lord, the giver of life,
who proceeds from the Father and the Son.

With the Father and the Son he is worshipped and glorified.

He has spoken through the Prophets.

We believe in one holy catholic and apostolic Church.

We acknowledge one baptism for the forgiveness of sins.

We look for the resurrection of the dead,
and the life of the world to come. Amen.

‘consubstantial’. Not what I learned in the prayer, but close nowadays.


3 posted on 01/19/2026 4:41:30 PM PST by kawhill (I'll start...the sweeter wind is finally found)
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To: ebb tide

Question

Which Pope declared Anglican Orders to be invalid?

Answer

Pope Leo XIII made that declaration. In 1896, he issued the apostolic letter Apostolicae curae, which stated that Anglican ordinations were “absolutely null and utterly void.”

4 posted on 01/19/2026 4:46:29 PM PST by Dr. Sivana ("Whatsoever he shall say to you, do ye." (John 2:5))
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To: kawhill

i believe Satan has deceived you.


5 posted on 01/19/2026 6:07:07 PM PST by Old Yeller
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To: Old Yeller

You believe in a lot of lies.

That’s on you; no one else.


6 posted on 01/19/2026 7:32:12 PM PST by ebb tide
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