From St. Faustina's Diary:
Third DaySay the Chaplet of Divine Mercy.
1214 [Jesus:] Today bring to Me all devout and faithful souls, and immerse them in the ocean of My mercy. These souls brought Me consolation on the Way of the Cross. They were that drop of consolation in the midst of an ocean of bitterness.
1215 [St. Faustina:] Most Merciful Jesus, from the treasury of Your mercy, You impart Your graces in great abundance to each and all. Receive us into the abode of Your Most Compassionate Heart and never let us escape from It. We beg this of You by that most wondrous love for the heavenly Father with which Your Heart burns so fiercely.
The miracles of mercy are impenetrable.
Neither the sinner nor just one will fathom them.
When You cast upon us an eye of pity,
You draw us all closer to Your love.
Eternal Father, turn Your merciful gaze upon faithful souls, as upon the inheritance of Your Son. For the sake of His sorrowful Passion, grant them Your blessing and surround them with Your constant protection. Thus may they never fail in love or lose the treasure of the holy faith, but rather, with all the hosts of Angels and Saints, may they glorify Your boundless mercy for endless ages. Amen.