Liège

In the early 13th century in Liège, Belgium, a young Augustinian nun named Juliana of Cornillon began experiencing profound mystical visions related to the Blessed Sacrament. Beginning around 1208, when she was 16 years old, she repeatedly saw a vision of the full moon with one dark spot marring its brilliance. Deeply troubled by this recurring image, she prayed for understanding.

About this miracle

In subsequent visions, Christ Himself appeared to St. Juliana and explained the meaning: the full moon represented the Church's liturgical year, and the dark spot symbolized the absence of a feast specifically dedicated to honoring His Real Presence in the Eucharist. Jesus requested that Juliana work toward establishing such a feast, despite her young age and humble position.

For many years, St. Juliana kept these visions private, sharing them only with her confessor and a few trusted companions. She faced considerable skepticism and opposition when she eventually revealed her mission more widely. However, her cause was championed by Jacques Pantaléon, Archdeacon of Liège, who believed in the authenticity of her visions and their divine origin.

In 1246, the Bishop of Liège, Robert de Thorete, authorized the celebration of a Feast of Corpus Christi (Body of Christ) in his diocese—the first ecclesiastical approval of Juliana's vision. This regional feast celebrated the mystery of Christ's Real Presence in the Eucharist.

St. Juliana died in 1258, before seeing her vision fully realized. However, in 1261, Jacques Pantaléon was elected as Pope Urban IV. In 1264, he promulgated the papal bull *Transiturus de hoc mundo*, which extended the Feast of Corpus Christi to the entire universal Church. The bull discreetly referenced Juliana's mystical experiences, implicitly confirming their authenticity. Urban IV commissioned St. Thomas Aquinas—the greatest theologian of the age—to compose the liturgical texts for the feast, including the famous hymns *Pange Lingua* and *Tantum Ergo*.

The feast was further confirmed by the Council of Vienne (1311-1312) under Pope Clement V, ensuring its permanent place in the Church's liturgical calendar. St. Juliana's formal cult was approved in 1869 by Pope Pius IX, who recognized her sanctity and the fruit of her visions.

The institution of Corpus Christi became one of the most important and beloved feasts in the Catholic Church, generating centuries of Eucharistic devotion, magnificent processions, theological reflection, and artistic expression. St. Juliana's visions at Liège thus had a profound and lasting impact on the entire Catholic Church and the development of Eucharistic theology and devotion.