On February 22,
1931, Our Lord appeared to St. Faustina in a vision where he began
to reveal to her for the first time His Divine Mercy, she wrote in
her diary the following: “In the evening, when I was in my cell, I
saw the Lord Jesus clothed in a white garment. One hand [was]
raised in the gesture of blessing, the other was touching the
garment at the breast. From beneath the garment, slightly drawn
aside at the breast, there were emanating two large rays, one red,
the other pale. In silence I kept my gaze fixed on the Lord; my
soul was struck with awe, but also with great joy. After a while,
Jesus said to me:
Paint an image according to the pattern you see, with the signature: Jesus, I trust in You. I desire that this image be venerated, first in your chapel, and [then} throughout the world. 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” (Diary, 47-48).
When I told this to my confessor29, I received this for a reply: “That refers to your soul.” He told me, “Certainly, paint God’s image in your soul.” When I came out of the confessional, I again heard words such as these:
My image already is in your soul. I desire that there be a Feast of Mercy. I want this image, which you will paint with a brush, to be solemnly blessed on the first Sunday after Easter; that Sunday is to be the Feast of Mercy” (Diary, 49).
At the request of her spiritual director, St. Faustina asked the Lord about the meaning of the rays in the image. She heard these words in reply:
“The two rays denote Blood and Water. The pale ray stands for the Water which makes souls righteous. The red ray stands for the Blood which is the life of souls. These two rays issued forth from the depths of My tender mercy when My agonized Heart was opened by a lance on the Cross... Happy is the one who will dwell in their shelter, for the just hand of God shall not lay hold of him” (Diary, 299).
The Lord reveals to us His Pierced Heart, the water and blood that flow from His heart are a fountain of mercy and reconciliation for all men.
This revelation is a continuation of the Divine Mercy that Our Lord offers us in the Cross and which he revealed also to St. Margaret Mary.“By means of this Image I shall be granting many graces to souls; so let every souls; so let every soul have access to it” (Diary #570).