-- Lk 8:16-18
By canonizing some of the faithful, i.e., by solemnly proclaiming that they practiced heroic virtue and lived in fidelity to God's grace, the Church recognizes the power of the Spirit of holiness within her and sustains the hope of believers by proposing the saints to them as models and intercessors. "The saints have always been the source and origin of renewal in the most difficult moments in the Church's history." Indeed, "holiness is the hidden source and infallible measure of her apostolic activity and missionary zeal."
-- CCC 828
In photo: The archbishop of Naples shows the reliquary containing the blood of Saint Januarius / San Gennaro during the feast of the patron at the Duomo. The faithful gather in the cathedral church on the feast day to beg for a sign of favor in the liquefaction of the saint's relic as a sign that the city will be preserved from the danger of natural disasters such as the eruption of the volcano Vesuvius which looms over the city or earthquake.
Video: San Gennaro Il miracolo del sangue sciolto a Napoli / San Gennaro: the miracle of liquefying blood at Naples