1. Begin with the Sign of the Cross, 1 Our Father, 1 Hail Mary and The Apostles Creed.
2. Then on the Our Father Beads say the following: Eternal Father, I offer Thee the Body and Blood, Soul and Divinity of Thy dearly beloved Son, Our Lord Jesus Christ, in atonement for our sins and those of the whole world. Or in Latin; PATER aeterne, offero tibi Corpus et Sanguinem, animam et divinitatem dilectissimi Filii Tui, Domini nostri, Iesu Christi, in propitiatione pro peccatis nostris et totius mundi.
3. On the 10 Hail Mary Beads say the following: For the sake of His sorrowful Passion, have mercy on us and on the whole world. Or in Latin; PRO DOLOROSA Eius passione, miserere nobis et totius mundi. (Repeat step 2 and 3 for all five decades).
4. Conclude with (three times): Holy God, Holy Mighty One, Holy Immortal One, have mercy on us and on the whole world. Or in Latin; SANCTUS Deus, Sanctus Fortis, Sanctus Immortalis, miserere nobis et totius mundi
In 1933, God gave Sister Faustina a striking vision of His Mercy, Sister tells us: "I saw a great light, with God the Father in the midst of it. Between this light and the earth I saw Jesus nailed to the Cross and in such a way that God, wanting to look upon the earth, had to look through Our Lord's wounds and I understood that God blessed the earth for the sake of Jesus."
Of another vision on Sept. 13, 1935, she writes: "I saw an Angel, the executor of God's wrath... about to strike the earth...I began to beg God earnestly for the world with words which I heard interiorly. As I prayed in this way, I saw the Angel's helplessness, and he could not carry out the just punishment...." The following day an inner voice taught her to say this prayer on ordinary rosary beads: "First say one 'Our Father', 'Hail Mary', and 'I believe'. Then on the large beads say the following words: 'Eternal Father, I offer Thee the Body and Blood, Soul and Divinity of Thy dearly beloved Son, Our Lord Jesus Christ, in atonement for our sins and those of the whole world.' On the smaller beads you are to say the following words: 'For the sake of His sorrowful Passion have mercy on us and on the whole world.' In conclusion you are to say these words three times: 'Holy God, Holy Mighty One, Holy Immortal One, have mercy on us and on the whole world'.
Jesus said later to Sister Faustina: "Say unceasingly this chaplet that I have taught you. Anyone who says it will receive great Mercy at the hour of death. Priests will recommend it to sinners as the last hope. Even the most hardened sinner, if he recites this Chaplet even once, will receive grace from My Infinite Mercy. I want the whole world to know My Infinite Mercy. I want to give unimaginable graces to those who trust in My Mercy...." "....When they say this Chaplet in the presence of the dying, I will stand between My Father and the dying person not as the just judge but as the Merciful Savior".
Taken from EWTN