According to the notebooks of Sister Faustina, Jesus made the following statements about this day: "On that day the very depths of My tender mercy are open. I pour out a whole ocean of graces upon those souls who approach the fount of My mercy. The soul that will go to Confession and receive Holy Communion shall obtain complete forgiveness of sins and punishment. On that day all the divine floodgates through which grace flow are opened. Let no soul fear to draw near to Me, even though its sins be as scarlet. My mercy is so great that no mind, be it of man or of angel, will be able to fathom it throughout all eternity." (Diary of Sr. Faustina, 699)
The devotion was celebrated unofficially in many places for some years. On April 30, 2000 (Divine Mercy Sunday of that year), Pope John Paul II canonized St. Faustina and designated the Sunday after Easter as Divine Mercy Sunday in the General Roman Calendar, with effect from the following year. He also decreed a plenary indulgence associated with this devotion. Pope John Paul II said he felt a closeness to Sr. Faustina when he was writing Dives in misericordia [1]. He died during the vigil of the Divine Mercy Sunday in 2005.
