In private revelation to St. Maria Faustina, Jesus told her that He wanted a Novena to the Divine Mercy to be made before the Feast of Divine Mercy. He said: "I desire that during these nine days you bring souls to the fount of My Mercy . . . I will deny nothing to any soul whom you will bring to the fount of My Mercy.”
Jesus also revealed to St. Faustina a powerful prayer that he wanted everyone to say – the Chaplet of Mercy. He said: “Encourage souls to say the Chaplet which I have given you . . . Whoever will recite it will receive great mercy at the hour of death.”
The Chaplet can be said anytime, but the Lord specifically asked that it be recited as a novena, especially on the nine days before the Feast of Mercy. He promised, “By this Novena (of Chaplets), I will grant every possible grace to souls.”
Pamphlets with the Novena and Chaplet are available in the Narthex.