This Prayer was handed down through Devine revelation by Saint Maria Fustina. It is a short but very effective prayer which has worked in many miraculous ways. Below, is a simple insight to how the prayer is recited using the Rosary beads.
3 O’CLOCK PRAYER FOR MERCY
You expired (died) JESUS, but the source of life gushed forth for souls, and the ocean of mercy opened up for the whole world. O Fount of life, unfathomable Divine Mercy, envelope the whole world and empty yourself out upon us.
O Blood and Water which gushed forth from the Heart of JESUS, as a fountain of Mercy for us, I trust in you. (Three Times)
HOW TO PRAY THE DIVINE MERCY CHAPLET USING A SET OF ROSARY BEADS
Using a set of Rosary beads, make the sign of the Cross:
In the name of THE FATHER, and of THE SON and of THE HOLY SPIRIT. Amen
On the first three beads after the cross:
Pray one Our Father, one Hail Mary, and the Apostles Creed.
On the large bead before each of the five decades of the Rosary beads, begin by praying:
Eternal Father, we offer you the Body, Blood, Soul, and Divinity of your dearly beloved Son, our Lord Jesus Christ, in atonement for our sins and those of the whole world.
Then recite the following prayer on each of the ten small beads
L/ For the sake of his sorrowful passion,
R/ Have mercy on us and on the whole world.
After concluding the five decades, then pray:
L/ Holy God, Holy Mighty One, Holy Immortal One,
R/ Have mercy on us and on the whole world. (x3)
Let Us Pray: O Holy and Eternal God, in whom Mercy is endless and the treasury of compassion inexhaustible, look kindly upon us and increase your Mercy in us so that in difficult moments, we might not despair nor become despondent, but with increasing confidence, submit ourselves to your Holy Will, which is Love and Mercy itself. Amen.
A prayer for Devine Mercy.
O Greatly Merciful God, Infinite Goodness, today all mankind calls out from the abyss of its misery to Your mercy — to Your compassion, O God; and it is with its mighty voice of misery that it cries out. Gracious God, do not reject the prayer of this earth’s exiles! O Lord, Goodness beyond our understanding, Who are acquainted with our misery through and through, and know that by our own power we cannot ascend to You, we implore You: anticipate us with Your grace and keep on increasing Your mercy in us, that we may faithfully do Your holy will all through our life and at death’s hour. Let the omnipotence of Your mercy shield us from the darts of our salvation’s enemies, that we may with confidence, as Your children, await Your [Son’s] final coming — that day known to You alone. And we expect to obtain everything promised us by Jesus in spite of all our wretchedness. For Jesus is our Hope: through His merciful Heart, as through an open gate, we pass through to heaven.
Source: Devine Mercy Prayer Book.