The principal symbol used in these prophecies is, "the sun;" and this is said to "become black," and to be "turned into darkness." Our first inquiry, therefore, is, what principle in the spiritual world of Christianity, corresponds with this luminary in the world of matter. And in this inquiry we shall be aided, if we consider the functions it performs. The sun is the source of all natural heat and splendor; and without his influence, the worlds in the solar system, now glowing in light and beauty, would be dead and unattractive masses of matter. He is the cause of all vegetable and animal life: deprived of his beams, vegetation would decay, and the animal kingdom sink in death. He is the principal agent in the production of sight; the eye without him, would be a useless organ. In a word, if we were called upon to name the most important agent in the material world, our thoughts would turn at once to the sun. Now, in the spiritual world, including both the church of God and the individual spirit of man, what is that which produces the same effects as the natural sun does in the system of matter? What is the source of love and wisdom, spiritual heat and spiritual light?--What is it that produces in the mind those fruits of righteousness which are the characteristics of true religion? What gives to reason (the eye of the mind) its power of discerning spiritual things? and invests the soul, naturally dark and lifeless, with spiritual life and glory? It is Divine Love that does this. This is the Sun of the spiritual universe,--the Fountain of all heavenly light and life,--the Cause of every good word and work. And in giving this meaning to the natural image, we are supported throughout by the Sacred Scripture. The Lord is called "the Sun," and, "the Sun of Righteousness." He is said to _rise_ upon the mind, when the spirit turns itself toward Him; and to _turn away_ from man, when he departs from his Maker. In the same manner, whenever the prophets or apostles were favored with a visible representation of the Divine Majesty, they describe the face of God as shining like _the sun_. Now the face of God is his Love. Hence the Psalmist says, "Lift upon us _the light of thy countenance_, and cause thy face to shine upon us." And this love of God is described as the sun, rising, shining, and giving light. Thus, too, in the visions of John, when the apostle beheld an image of the pure church of Christ, he describes her as "a woman _clothed with the sun_;" or encompassed on every side by the Divine Love. By the sun, then, in the internal sense of prophecy, we understand the infinite and unbounded love of the Almighty, which alone is the cause of life and light; and which gives strength, support, and beauty, to the spiritual system of man.