Apr 22nd - Catherine of Siena

With this light that is given to the eye of the intellect, Thomas Aquinas saw Me, wherefore he acquired the light of much science; also Augustine, Jerome, and the doctors, and my saints. They were illuminated by My Truth to know and understand My Truth in darkness.
By My Truth I mean the Holy Scripture, which seemed dark because it was not understood; not through any defect of the Scriptures, but of them who heard them, and did not understand them. Wherefore I sent this light to illuminate the blind and coarse understanding, uplifting the eye of the intellect to know the Truth....
So you see that the eye of the intellect has received supernatural light, infused by grace, by which the doctors and saints knew light in darkness, and of darkness made light. The intellect was, before the Scriptures were formed, wherefore, from the intellect came science, because in seeing they discerned. It was thus that the holy prophets and fathers understood, who prophesied of the coming and death of My Son, and the Apostles, after the coming of the Holy Spirit, which gave them that supernatural light.
...when the eye of the intellect is ravished by the fire of My charity, in which charity it receives the supernatural light. With this light the souls in the unitive state love Me, because love follows the intellect, and the more it knows the more can it love. Thus the one feeds the other, and, with this light, they both arrive at the Eternal Vision of Me, where they see and taste Me, in Truth, the soul being separated from the body, as I told you when I spoke to you of the blissfulness that the soul received in Me.

-- Dialog, 11