From the diary of a young Polish nun, a special devotion began spreading throughout the world in the 1930s. The message is nothing new, but is a reminder of what the Church has always taught through scripture and tradition: that God is merciful and forgiving and that we, too, must show mercy and forgiveness. But in the Divine Mercy devotion, the message takes on a powerful new focus, calling people to a deeper understanding that God’s love is unlimited and available to everyone — especially the greatest sinners.
The message and devotion to Jesus as The Divine Mercy is based on the writings of Saint Faustina Kowalska
, an uneducated Polish nun who, in obedience to her spiritual director, wrote a diary of about 600 pages recording the revelations she received about God’s mercy. Even before her death in 1938, the devotion to The Divine Mercy had begun to spread.
The earliest element of the Devotion to the Divine Mercy revealed to St. Faustina was the Image
in which Jesus appeared to her with rays radiating from His heart.
Divine Mercy Sunday
During the course of Jesus' revelations to Saint Faustina on the Divine Mercy He asked on numerous occasions that a feast day be dedicated to the Divine Mercy and that this feast be celebrated on the Sunday after Easter. The liturgical texts of that day, the 2nd Sunday of Easter, concern the institution of the Sacrament of Penance, the Tribunal of the Divine Mercy, and are thus already suited to the request of Our Lord. This Feast, which had already been granted to the nation of Poland and been celebrated within Vatican City, was granted to the Universal Church by Pope John Paul II on the occasion of the canonization of Sr. Faustina on 30 April 2000. In a decree dated 23 May 2000, the Congregation for Divine Worship and the Discipline of the Sacraments stated that "throughout the world the Second Sunday of Easter will receive the name Divine Mercy Sunday, a perennial invitation to the Christian world to face, with confidence in divine benevolence, the difficulties and trials that mankind will experience in the years to come."