"I, Sister Faustina, by the order of God, have visited the abysses of hell so that I might tell souls about it and testify to its existence. I cannot speak about it now; but I have received a command from God to leave it in writing. The devils were full of hatred for me, but they had to obey me at the command of God. What I have written is but a pale shadow of the things I saw. But I noticed one thing: that most of the souls there are those who disbelieved that there is a hell. When I came to, I could hardly recover from the fright. How terribly souls suffer there! Consequently, I pray even more fervently for the conversion of sinners. I incessantly plead God's mercy upon them. O my Jesus, I would rather be in agony until the end of the world, amidst the greatest sufferings, than offend You by the least sin."
~ Saint Faustina; excerpt 741 from The Diary of Saint Maria Faustina Kowalska ~