Saint Margaret Mary wrote of Jesus, "And He showed me that it was His great desire of being loved by men and of withdrawing them from the path of ruin into which Satan hurls such crowds of them, that made Him form the design of manifesting His Heart to men, with all the treasures of love, of mercy, of grace, of sanctification and salvation which it contains, in order that those who desire to render Him and procure for Him all the honor and love possible, might themselves be abundantly enriched with those divine treasures of which this Heart is the source. He should be honored under the figure of this Heart of flesh, and its image should be exposed ... He promised me that wherever this image should be exposed with a view to showing it special honor, He would pour forth His blessings and graces. This devotion was the last effort of His love that He would grant to men in these latter ages in order to withdraw them from the empire of Satan which He desired to destroy, and thus to introduce them into the sweet liberty of the rule of His love, which He wished to restore in the hearts of all those who should embrace this devotion."

Jesus gave the following promises to Saint Margaret Mary for souls devoted to His most Sacred Heart:

1. I will give them all the graces necessary in their state in life.
2. I will establish peace in their homes.
3. I will comfort them in their afflictions.
4. I will be their secure refuge in life and above all in death.
5. I will bestow abundant blessings on all their undertakings.
6. Sinners shall find in My heart the source and infinite ocean of mercy.
7. Tepid souls shall become fervent.
8. Fervent souls shall quickly mount to high perfection.
9. I will bless every place where a picture of My heart shall be exposed, and honored.
10. I will give to priests the gift of touching the most hardened hearts.
11. Those who shall promote this devotion shall have their names written in My heart, never to be blotted out.
12. I promise you, in the excessive mercy of my heart that my all-powerful love will grant to all those who receive Holy Communion on the first Friday for nine consecutive months the grace of final repentance; they shall not die in My disgrace nor without receiving the sacraments; My Divine Heart shall be their safe refuge in that last moment.

1. To receive nine Holy Communions.
2. On the first Friday of the month.
3. For nine consecutive months, without interruption.
4. With the proper dispositions.
5. With the intention of making reparation to the heart of Jesus, and to obtain the fruit of the "Great Promise."

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