The word of God is a spring of light. The light therefore fills, and the light shines, and illumines the senses of the faithful. For from Him and in Him shines, and those who partake of Him shine. And He does not only enlighten the minds of the faithful, but grants the name of light. For the divine Scripture, for those who dwell with the ignorant and who live in disbelief, rightly calls them darkness, not receiving the lamp of truth, that they might be sons of light. Therefore, the divine Apostle Paul writes: "We were not sons of the night, nor of the darkness, but sons of the light and day." And regarding the sons of light was the evangelical word spoken from the mouth of God: "I am," as Christ said, "the light of the world. He who follows me will not walk in darkness, but will have the light of life."