I will give them all the graces necessary for their state of life.
I will establish peace in their families.
I will console them in all their trials.
I will be their refuge in life and especially at the hour of death.
I will abundantly bless all their undertakings.
Sinners will find in my Heart the source and infinite ocean of mercy.
Lukewarm souls will become fervent.
Fervent souls will rapidly grow in holiness and perfection.
I will bless the places where the image of My Sacred Heart will be exposed and venerated.
I will give to priests the power to touch the most hardened hearts.
Those who propagate this devotion will have their names eternally written in my Heart.
In the excessive mercy of my Heart, I promise that my all powerful love will grant to all those who will receive Communion on the First Fridays of nine consecutive months the grace of final repentance: they will not die in my displeasure, nor without receiving the sacraments; and my Heart will be their secure refuge in that last hour.
More material for the Solemnity of the Sacred Heart of Jesus
Related: Christ invites us to his Sacred Heart 2013