“My daughter; tell souls that I am giving them My mercy as a defense. I, Myself, am fighting for them and am bearing the just anger of My Father.” (Diary 1516)

St. Faustina wrote at the behest of Jesus.  He called her, “My Secretary”.

“…In the old covenant I sent prophets wielding thunderbolts to my people. Today I am sending you with My mercy to the people of the whole world. I do not want to punish aching mankind but I desire to heal it pressing it to My merciful heart…” (Diary 1588)