Good Friday marks the day that Jesus’ heart of mercy was opened to all mankind. In repeated revelations to St. Faustina, Jesus made it clear that the fountain is His Heart, the water is His mercy, and the vessel is trust.
I have opened My Heart as a living fountain of mercy. Let all souls draw life from it. Let them approach this sea of mercy with great trust (Diary, 1520).
On the cross, the fountain of My mercy was opened wide by the lance for all souls — no one have I excluded! (1182).
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” (327).
The graces of My mercy are drawn by means of one vessel only, and that is — trust. The more a soul trusts, the more it will receive (1578).
In the Diary of St. Faustina, we hear Our Lord reminding us that we can depend upon His love … that He alone is worthy of our trust:
I never reject a contrite heart (1485). Sooner would heaven and earth turn into nothingness than would My mercy not embrace a trusting soul (1777).
But there is more to trust than just believing that God is trustworthy. We have to act upon that belief. Trust involves a turning back to God, a real conversion of our whole lives to God, repenting of our sins and forgiving others. Trust is a living faith.
Trust means that we agree to let God be God, instead of trying to be God ourselves. (Trust is the antidote to the first sin of Adam!) It means that we agree that God can write the script of our lives, instead of insisting on our own script. It means that we agree with the great pledge we make in the Our Father: “Your will [not mine] be done on earth as it is in heaven.” It means that even in our moments of agony we agree with the cry of Jesus in the Garden, “Not my will, but Yours be done” (Lk 22:42).
God is Mercy itself, and we are called to practice the ABC’s of mercy (Ask for His Mercy, Be merciful to others, Completely trust in Jesus). As we do, our trust in Jesus is the vital ingredient. We don’t simply ask for mercy, nor do we simply try to be good to other people. We ask with complete trust, and Our Lord fills us with grace so that we can be merciful as our Heavenly Father is merciful.
I am Love and Mercy itself. When a soul approaches Me with trust, I fill it with such an abundance of graces that it cannot contain them within itself, but radiates them to other souls (1074).
From The Divine Mercy