The meaning of Pope Leo XIV’s inauguration Mass and taking possession of St. John Lateran

Pope Leo XIV smiles as a jubilant crowd joins in prayer on Sunday, May 11, 2025. / Credit: Daniel Ibáñez/CNA Vatican City, May 17, 2025 / 07:00 am (CNA). The Mass for the inauguration of Pope Leo XIV’s pontificate will be celebrated on Sunday, May 18, at 10 a.m. Rome time in St. Peter’s Square. The liturgy will mark the official beginning of his ministry as successor of Peter and bishop of Rome. On May 25, he will take canonical…