Perhaps the most iconic image of 2025—at least for those attentive to ecumenism—was that of the Roman Pontiff, His Holiness Pope Leo XIV, and the British monarch, His Majesty King Charles III, praying together in the Sistine Chapel at the Vatican in October, during the Holy Year of the Jubilee.

This historic moment of public prayer—perhaps the first in a millennium, and certainly the first since the Reformation and King Henry VIII’s 1534 break with Rome—was monumental not merely as a gesture, but as an act of dialogue. That the prayer took place in the Sistine Chapel, where popes are elected, only heightened its significance. Yet what made the moment especially powerful was twofold.

First, throughout the public-facing events between the two monarchs, there were no grand speeches. There were actions—acts of dialogue rendered through presence, prayer, and shared ritual.

Second, while the 2025 State Visit of King Charles and Queen Camilla was historic in its own right, the image the world witnessed was not an isolated event. Rather, it represented the culmination of a decade-long series of steps that gradually brought Roman popes and British monarchs closer together.

As observed by Cardinal Vincent Nichols:

“The events of that day are well known: a private meeting with Pope Leo with an exchange of gifts, a ceremony of prayer in the magnificent Sistine Chapel, a time of further discussion, then another wondrous ceremony in the Basilica of St Paul Outside the Walls, and finally a formal reception and the planting of a tree at the Beda College.”

What made each step in this journey of reconciliation between two Christian traditions so remarkable was that the faithful—and even the curious—were able to witness these moments together. The images seen by Christians around the world remain vivid in memory and heart. They were more than words; they were acts of fraternity—what the late Pope Francis so often described as expressions of our shared “human family.”

Notably, carefully crafted speeches were replaced by enduring symbols of fraternity and confraternity. The mutual bestowal of knightly orders—linking faith, diplomacy, and state honor—served as gestures of reconciliation expressed in the ancient language of chivalry.

Overlooked in many reports was the fact that Pope Leo XIV conferred upon King Charles III the Knight Grand Cross with Collar of the Pontifical Order of Pius IX, a papal order originally founded in 1560. In turn, His Majesty conferred upon the Pope the Honorary Knight Grand Cross of the Most Honourable Order of the Bath.

As one expert noted:

“The Order of the Bath is not a decoration of courtesy. It is a chivalric order tied to ancient symbolism of purification and Christian knighthood. To confer its highest honorary grade upon a pope was to say aloud, in the language of honor, what has slowly emerged in the language of diplomacy: that the Reformation path is no longer a prohibition against fraternal dignity.”

What the world witnessed, then, was something that extended beyond ecumenism toward a restoration of spiritual fraternity.

Choir Diplomacy

Accompanying these acts was another profound symbol: the blending of Anglican and Catholic sacred music. Choirs from His Majesty’s Chapel Royal at St. James’s Palace, St. George’s Chapel at Windsor Castle, and the Sistine Chapel Choir of the Apostolic Palace sang in harmony.

Few images better embody the phrase often attributed to Saint Augustine—“a song is twice a prayer”—than these three legendary choirs singing before both Pope and King. That Augustine is the patron of Pope Leo XIV’s Augustinian order only deepens the resonance.

Less widely known is that this “choir diplomacy” predated the public prayer by many years and quietly helped bind the two royal courts in symbolic symmetry.

In 2018, the Queen’s Royal Household invited Pope Francis’s Sistine Chapel Choir to the Court of St. James’s. A small number of us were fortunate enough to witness what may have been the first shared Evensong between His Majesty’s Chapel Royal and the Sistine Chapel Choir in five centuries. The service, led by Canon Paul Wright LVO at St. James’s Palace—a palace built by King Henry VIII, a detail not lost on those present—was followed by a special royal concert at Buckingham Palace in support of Aid to the Church in Need.

These exchanges were years in the making and flowed in both directions. Importantly, they extended beyond Europe. When the Sistine Chapel Choir traveled to New York to sing at St. Patrick’s Cathedral, they also accepted an ecumenical invitation to perform at St. Thomas Church on Fifth Avenue. For many Americans, this was a sign that choral diplomacy transcends both oceans and denominational boundaries.

Over time, these choral exchanges brought the courts of London and Rome closer—chorus by chorus—until they bore unexpected fruit.

The Coronation Cross: The Cross of Wales

At its inception a Welsh Celtic processional cross was commissioned by King Charles when he was the Prince of Wales in honor of the centenary of the Church in Wales and entrusted to the Goldsmiths’ Company of London—an ancient guild whose craftsmanship has long served the Crown. The intention was straightforward yet symbolic: to honor Welsh Christian history and heritage.

Following the death of Her late Majesty Queen Elizabeth II, and in anticipation of the coronation of King Charles III, an unexpected opportunity emerged to deepen the gesture. Pope Francis, acting through the same ecclesiastical relationships fostered by years of choral and cultural exchange, offered a profoundly personal gift to the new monarch: two relics of the True Cross.

These papal relics were then incorporated into the already-commissioned Cross of Wales. In doing so, the initial project was transformed into something far broader—an act of spiritual reconciliation between the Pope and the Crown, and by extension, between Catholics and Anglicans.

The Cross of Wales, now bearing relics of the True Cross from the Vatican, became the Coronation Cross. It led the procession of King Charles III into Westminster Abbey, marking a moment without precedent since the Reformation. For the first time in nearly five centuries, a Roman cardinal was present inside Westminster Abbey for the coronation of a British monarch.

And so we return to the image of 2025: a King and a Pope praying together in the Sistine Chapel.

It was a historic moment, but not a sudden one. It was the result of years of patient work by thoughtful leaders in Rome and London, courtiers across two royal courts, choirs, clergy, and a quiet community of supporters. Like many iconic images, there is a deeper story behind the moment—and behind that story are the often-unseen individuals who made it possible.

So the next time you hear a sacred chorus in London, in Rome, or wherever you may be, remember that prayers—when sung—can echo far beyond the moment.

Sometimes, twice the prayer can help shape history.