"My divine Heart is so passionately in love with man
that it can no longer withhold the flames of that burning love. It must let them spread abroad by means of you and reveal
itself to men to enrich them with it's profound treasures which hold the graces they need to be saved." -- Our
Lord Jesus Christ to St. Margaret Mary Alacoque
"And He showed me that it was His great desire of being loved by men and by 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 santification 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 abuntantly enriched
with those divine treasures of which His heart is the source. He should be honored under the figure of this Heart of
flesh, and it's 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." -- St. Margaret Mary Alacoque
So with this mandate from the Lord, St. Margaret Mary became the Lord's messenger.
There was really nothing new to the message, for Jesus Himself had told man more than sixteen centuries earlier,
"You shall love the Lord, your God, with all your heart, soul and mind,...and you shall love your neighbor as yourself."
-- Matthew 22:37-40
The Lord appeared to St. Margaret Mary for over three years during the 17th
century and made many promises to those who would honor Him by this devotion. In 1899, Pope Leo XIII consecrated the
world to the Sacred Heart of Jesus.