Turn to any page of St. Faustina’s Diary and you’ll find spiritual gems. Like this one:

Once, as I was going down the hall to the kitchen, I heard these words in my soul: Say unceasingly the chaplet that I have taught you. Whoever will recite it will receive great mercy at the hour of death. Priests will recommend it to sinners as their last hope of salvation. Even if there were a sinner most hardened, if he were to recite this chaplet only once, he would receive grace from My infinite mercy. I desire that the whole world know My infinite mercy. I desire to grant unimaginable graces to those souls who trust in My mercy (Diary, 687).