Three great parables on prayer are conveyed by Luke: the first is ‘the dull friend’, who encourages us to make constant requests in prayer; the second ‘the widow’ prayed, believed and hoped always; the third ‘the Pharisee and the publican’ had humility... Catechesis on Prayer: the foundation of Jesus' relationship with his disciples, aridity and acedia with P. Raphaël Eugène Ralison.