[3][4][5] Additionally, the Catholic Church also grants a plenary indulgence (observing the usual rules) with the recitation of some simple prayers.

Mankind will not have peace until it turns with trust to My mercy.I desire that the Feast of Mercy be a refuge and shelter for all souls, and especially for poor sinners.

The soul that will go to Confession and receive Holy Communion shall obtain the complete forgiveness of sins and punishment.

Let no soul fear to draw near to Me, even though its sins be as scarlet.I want to grant a complete pardon to the souls that will go to Confession and receive Holy Communion on the Feast of My Mercy.This special promise of grace of forgiveness is similar to the grace received at baptism and greater than a plenary indulgence.

On March 23, 1937, Kowalska wrote in her diary (Notebook III, item 1044) that she had a vision that the feast of Divine Mercy would be celebrated in her local chapel, and would be attended by large crowds, and that the same celebration would be held in Rome attended by the pope.

[17][18] On April 22, 2001, which was one year after establishing Divine Mercy Sunday, Pope John Paul II re-emphasized its message in the resurrection context of Easter: Jesus said to Sr Faustina one day: "Humanity will never find peace until it turns with trust to Divine Mercy".

This is the Easter gift that the Church receives from the risen Christ and offers to humanity[19] The devotion to Divine Mercy Sunday grew rapidly after its designation by Pope John Paul II and is now widely celebrated by Catholics.

[7] The plenary indulgence is obtained by observing the usual dispositions that are in place for the granting of this grace through the intercession of the Catholic Church:[25][7] Additionally, the faithful who, for a justified reason beyond their control, are unable to go to a church or chapel may obtain an indulgence with the recitation of the Our Father and Creed before an image of Jesus, adding the prayer "Merciful Jesus, I trust in you", with the conditions of detachment of sin, and intention to fulfill the dispositions above as soon as possible.

[7] If even this is impossible to achieve, the indulgence can be obtained by the faithful if they "united with those carrying out the prescribed practice for obtaining the indulgence in the usual way", and offer to Jesus a prayer and their sufferings, again with the resolution of fulfilling the normal conditions at the earliest opportunity.