Jesus's promise to St. Faustina:

"Say unceasingly this chaplet that I have taught you. Anyone who says it will receive great Mercy at the hour of death. Priests will recommend it to sinners as the last hope. Even the most hardened sinner., if he recites this Chaplet even once will receive grace from My infinite Mercy. I want to give unimaginable graces to those trust in my Mercy..."

"...When they say this Chaplet in the presence of the dying, I will stand between My father and the dying person not as the just judge but as the Merciful Savior."