"My daughter, know that My Heart is mercy itself. From this sea of mercy, graces flow out upon the whole world. No soul that has approached Me has ever gone away unconsoled. All misery gets buried in the depths of My mercy, and every saving and sanctifying grace flows from this fountain. My daughter, I desire that your heart be an abiding place of My mercy. I desire that this mercy flow out upon the whole world through your heart. Let no one who approaches you go away without that trust in My mercy which I so ardently desire for souls.
Pray as much as you can for the dying. By your entreaties, obtain for them trust in My mercy, because they have most need of trust, and have it the least. Be assured that the grace of eternal salvation for certain souls in their final moment depends on your prayer. You know the whole abyss of My mercy, so draw upon it for yourself and especially for poor sinners. Sooner would heaven and earth turn into nothingness than would My mercy not embrace a trusting soul."
(Saint Faustina's Diary 1777)