Over a series of visits, Our Lord revealed to St. Margaret Mary the importance of devotion to His Sacred Heart. He asked that His heart, wounded on the cross and wounded by the ingratitude of men, be venerated and adored as an embodiment of His divine mercy and love.
Jesus especially asked that everyone go to Confession and receive Holy Communion often, especially on the First Friday of each month, and that reparation be made for sins committed against His Sacred Heart and the Holy Eucharist. Our Lord made special promises to those who keep a loving devotion to the attribute of His infinite love for mankind as represented in His Most Sacred Heart:
1. I will give them all the graces necessary in their state of life.
2. I will establish peace in their homes.
3. I will comfort them in all their afflictions.
4. I will be their secure refuge during life, and above all, in death.
5. I will bestow abundant blessings upon all their undertakings.
6. Sinners will find in My Heart the source and infinite ocean of mercy.
7. Lukewarm souls shall become fervent.
8. Fervent souls shall quickly mount to high perfection.
9. I will bless every place in which an image of My Heart is 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.
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 Fridays in nine consecutive months the grace of final perseverance; they shall not die in My disgrace, nor without receiving their sacraments. My divine Heart shall be their safe refuge in this last moment.