“Looking at the Eucharistic Lord for an hour,” he wrote, “transforms the heart in a mysterious way.” Pope St. Fulton Sheen once wrote that the purpose of the Holy Hour—a sustained, uninterrupted hour of prayer in the presence of the Blessed Sacrament—is to encourage a deep personal encounter with Christ. John Paul II, Pope Benedict XVI, and Pope Francis all joined Sheen in recommending Eucharistic Adoration as a foundational spiritual practice. Today, however, the hidden power of the Holy Hour radiates with special urgency—both for the Church and for the culture.