This is how Jesus appeared to sister Faustina.
Jesus asked for trust in Him, not just for our own salvation but for all sinners we entrust to Him. Our Faith calls down His Mercy, for Graces to rain on others.
The measure we measure.
“I am offering people a vessel with which they are to keep coming for graces to the fountain of mercy. That vessel is this image with the signature: ‘Jesus, I trust in You.’”
“I promise that the soul that will venerate this image will not perish. I also promise victory over [its] enemies already here on earth, especially at the hour of death. I Myself will defend it as My own glory.”