As often as you hear the clock strike the third hour, immerse yourself completely in My mercy, adoring and glorifying it; invoke its omnipotence for the whole world, and particularly for poor sinners; for at that moment mercy was opened wide for every soul. (1572) This is the hour of great mercy for the whole world. (1320)
It is Jesus' desire that the moment of His Death on the Cross (3:00 p.m.) be venerated every day; the hour which He said was the hour of grace for the whole world - mercy triumphed over justice. (1572) At this hour, He wants us to meditate upon His sorrowful Passion because it reveals most distinctly the love God has for His people. At this time Jesus wants us to worship and glorify the Mercy of God, and, by the merits of His passion, to implore the necessary graces for ourselves and the whole world, especially for sinners.
Try your best, Jesus instructed Sister Faustina, to make the Stations of the Cross in this hour, provided that your duties permit it; and if you are not able to make the Stations of the Cross, then at least step into the chapel for a moment and adore, in the Blessed Sacrament, My heart, which is full of mercy; and should you be unable to step into the chapel, immerse yourself in prayer there where you happen to be, if only for a very brief instant. (1572)
This is the hour, as Jesus promised, on which you can obtain everything for yourself and for others for the asking. (1572).
I will refuse nothing to the soul that makes a request of Me in virtue of My Passion. (1320)
The Hour of Mercy is associated explicitely with three o'clock in the afternoon. Our prayers at this time should be directed to Jesus, and our petitions should appeal to the merits of His sorrowful Passion.
Prayers at the Hour of Mercy