"These souls cause Me more suffering than any others; it was from such souls that My soul felt the most revulsion in the Garden of Olives. It was on their account that I said: 'My Father, if it is possible, let this cup pass Me by.' The last hope of salvation for them is to flee to My Mercy."
"On each day of the novena you will bring to My heart a different group of souls and you will immerse them in this ocean of My mercy ... On each day you will beg My Father, on the strength of My passion, for the graces for these souls."
Click here for the link to the Novena and additional information.