The message received by the nun, Saint Margaret Mary Alacoque of Paray-le-Monial, contains the "Twelve Promises of the Sacred Heart," in which Jesus reveals the graces linked to this devotion.
Love for the Sacred Heart of Jesus is directly tied to that of love for the Eucharist.
As the great apostle of this devotion, the Jesuit priest Henri Ramiere wrote, "It is in the Eucharist that we truly find the Heart of Jesus nearest to us; it is in the Eucharist that He unites himself in a most intimate way to us, and we to Him."
The Church, true minister of the Blood of Redemption, was born from the pierced Heart of Jesus on the Cross. From the same Heart comes also the grace of the Sacraments in guiding over the sins of men. The Church lives on the inner life in the children of the Church. Peace [?]
"Jesus is found in the Sacrament of the Eucharist, in which love keeps Him hidden under the appearances of bread and wine. He immolates Himself to His Father, and for our salvation.
His life is totally hidden from the eyes of the world, which succeed in seeing only the poor and humble appearances of bread and wine. [...] Jesus is always alone in the Blessed Sacrament. Try to never miss any Communion, lest we give ST. MARGARET MARY ALACOQUE
The Church wishes to invite the faithful ever more to draw near with confidence to this Holy Mystery and to commune over more hearts in the flames of love enkindled by the Sacred Heart burned when, in His infinite love, He instituted the Most Holy Eucharist." POPE BENEDICT XV
Saint Margaret received many mystical gifts and some revelations from Jesus. We list here below the "Twelve Promises of the Sacred Heart" which the Lord revealed to the saint:
1. To those devoted to My Sacred Heart, I will give all the graces and helps necessary to their state of life (Letter #141).
2. I will establish and safeguard peace in their Families (Letter #35).
3. I will console them in all their afflictions (Letter #141).
4. I will be their sure refuge in life, and above all, at the hour of death (Letter #141).
5. I will pour abundant blessings on all of their labors and undertakings (Letter #141).
6. Sinners will find in My Heart an inexhaustible source of mercy (Letter #132).
7. Lukewarm souls will become fervent with the practice of this devotion (Letter #132).
8. Fervent souls will ascend rapidly to a higher perfection (Letter #132).
9. My blessing will remain in those places in which the image of the Sacred Heart will be displayed and venerated (Letter #35).
10. To all those who labor for the salvation of souls, I will give the grace to be able to convert the hardest hearts (Letter #141).
11. Persons who spread this devotion will have their names written forever in My Heart (Letter #141).
12. To all people who receive Communion on the first Fridays of nine consecutive months, I will give the grace of endless perseverance and of eternal salvation (Letter #86).