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.
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)
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 explicitly 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
O Blood and Water, which gushed forth from the Heart of Jesus as a fount of Mercy for us, I trust in You (187).
You Yourself, Jesus, surely out of love for us, underwent such a terrible Passion. Your Father's justice would have been propitiated with a single sigh from You, and all Your self abasement is solely the work of Your mercy and Your inconceivable love ... At the end of Your death on the Cross, You bestowed upon us eternal life; allowing Your most holy side to be opened, You opened an inexhaustible spring of mercy for us, giving us Your dearest possession, the Blood and Water from Your Heart. Such is the omnipotence of Your mercy. From it all grace flows to us (1747).
O Jesus, eternal Truth, our Life, I call upon You and beg Your mercy for poor sinners. O sweetest Heart of my Lord, full of pity and unfathomable mercy, I plead with you for poor sinners. O Most Sacred Heart, Fount of Mercy from which gush forth rays of inconceivable graces upon the entire human race, I beg of You light for poor sinners. O Jesus, be mindful of Your own bitter Passion and do not permit the loss of souls redeemed at so dear a price of Your most precious Blood.
O Jesus, when I consider the great price of Your Blood, I rejoice at its immensity, for one drop alone would have been enough for the salvation of all sinners. (...) Oh, what immense joy burns in my heart when I contemplate Your incomprehensible goodness, O Jesus! I desire to bring all sinners to Your feet that they may glorify Your mercy throughout endless ages (72).
O Jesus, stretched out upon the cross, I implore You, give me the grace of doing faithfully the most holy will of Your Father, in all things, always and everywhere. And when this will of God will seem to me very harsh and difficult to fulfill, it is then I beg You, Jesus, may power and strength flow upon me from your wounds, and may my lips keep repeating, "Your will be done, O Lord".
O Savior of the world, Lover of man's salvation, who in such terrible torment and pain, forgot Yourself to think only of the salvation of souls, O most compassionate Jesus, grant in the grace to forget myself that I may live totally for souls, helping You in the work of salvation, according to the most holy will of Your Father (1265).
You expired, Jesus, but the source of life gushed forth for souls and the ocean of mercy opened up for the whole world. O Fount of Life, unfathomable Divine Mercy, envelop the whole world and empty Yourself out upon us (1319).