Catechism of the Catholic Church

Three principal parables on prayer are transmitted to us by St. Luke: (546, 2559) - The first, "the importunate friend," - The second, "the importunate widow," is centered on one of the qualities of prayer: it is necessary to pray always without ceasing and with the patience - The third parable, "the Pharisee and the tax collector," concerns the humility of the heart that prays. "God, be merciful to me a sinner!" The Church continues to make this prayer its own: Kyrie eleison!