Sing the “Tantum Ergo” in Latin with Pope Leo XIV, the last two verses of “Pange Lingua,” the Eucharistic Hymn written by St. Thomas Aquinas for the Solemnity of Corpus Christi. Pope Leo XIV celebrated Holy Mass at St. John Lateran with procession with the Eucharist to St. Mary Major’s Basilica. Latin text: Tantum ergo Sacramentum veneremur cernui: et antiquum documentum novo cedat ritui: praestet fides supplementum sensuum defectui. Genitori, Genitoque laus et iubilatio, salus, honor, virtus qu