87. Since love and fire mutually correspond, that sun appears before the eyes of the angels as fiery; for angels cannot see love with their eyes, but they see in the place of love what corresponds to it. For angels, equally with men, have an internal and an external; it is their internal that thinks and is wise, and that wills and loves; it is their external that feels, sees, speaks and acts. All their externals are correspondences of internals; but the correspondences are spiritual, not natural. Moreover, Divine love is felt as fire by spiritual beings. For this reason "fire," when mentioned in the Word, signifies love. In the Israelitish Church, "holy fire" signified love; and this is why, in prayers to God, it is customary to ask that "heavenly fire," that is Divine Love, "may kindle the heart." 88. With such a difference between the spiritual and the natural (as shown above, n. 83), nothing from the sun of the natural world, that is, nothing of its heat and light, nor anything pertaining to any earthly object, can pass over into the spiritual world. To the spiritual world the light of the natural world is thick darkness, and its heat is death. Nevertheless, the heat of the world can be vivified by the influx of heavenly heat, and the light of the world can be illumined by the influx of heavenly light. Influx is effected by correspondences; and it cannot be effected by continuity. 89. OUT OF THE SUN THAT TAKES FORM [existit] FROM THE DIVINE LOVE AND THE DIVINE WISDOM, HEAT AND LIGHT GO FORTH. In the spiritual world where angels and spirits are there are heat and light, just as in the natural world where men are; moreover in like manner as heat, the heat is felt and the light is seen as light. Still the heat and light of the spiritual world and of the natural world are (as said above) so entirely different as to have nothing in common. They differ one from the other as what is alive differs from what is dead. The heat of the spiritual world in itself is alive; so is the light; but the heat of the natural world in itself is dead; so is its light. For the heat and light of the spiritual world go forth from a sun that is pure love, while the heat and light of the natural world go forth from a sun that is pure fire; and love is alive, and the Divine Love is Life itself; while fire is dead, and solar fire is death itself, and may be so called because it has nothing whatever of life in it.