In entry (774) of her Diary, Divine Mercy in My Soul, St. Faustina writes:
"... in the spiritual life, suffering is the thermometer which measures the love of God in a soul."
The complete entry is:
(774) + O my Jesus, I understand well that, just as illness is measured with a thermometer, and a high fever tells us of the seriousness of the illness, so also, in the spiritual life, suffering is the thermometer which measures the love of God in a soul.
QUESTION: Does the "love of God" refer to God's Love for the soul, or the soul's love for God? Or something else? Does anyone know, with a fair degree of confidence, what St. Faustina means by this statement?
Remark: She had previously noted in (343) that: "True love is measured by the thermometer of suffering."