“Mercy imitates God, and disappoints Satan.”
—Saint John Chrysostom
“Jesus told Saint Faustina (Kowalska): ‘Humanity will not find peace until it turns trustfully to divine mercy’ (Diary, p. 132) … It is not a new message but can be considered a gift of special enlightenment that helps us to relive the Gospel of Easter more intensely, to offer it as a ray of light to the men and women of our time.” – St. John Paul II, Divine Mercy Sunday, 2000
In 1931, Jesus appeared to St. Faustina in Poland and expressed his desire for a feast celebrating his mercy. The Feast of Mercy was to be on the Sunday after Easter and was to include a public blessing and liturgical veneration of his image with the inscription “Jesus, I trust in You.” All priests were to proclaim God’s great mercy on this day.
The promise of mercy has been affirmed by the Church, which has made Divine Mercy Sunday an occasion for receiving a plenary indulgence, “the remission before God of the temporal punishment due to sin whose guilt has already been forgiven (CCC, 1471). The plenary indulgence is granted to the faithful under the usual conditions (Confession, Eucharist, prayer for the intentions of the pope, and complete detachment from sin, even venial sin). The faithful may either take part in the prayers and devotions held in honor of Divine Mercy in any church or chapel or recite the Our Father and Creed in in the presence of the Blessed Sacrament exposed or reserved in the tabernacle, adding a devout prayer to the merciful Lord Jesus.
United States Conference of Catholic Bishops
One can learn how to pray the Divine Mercy Chaplet by clicking visiting https://www.thedivinemercy.org/message/devotions/pray-the-chaplet