7680. 'The whole of that day and the whole of that night' means all the perception, both that which was darkened and that which was not darkened, of the molesting ones - that is to say, it was all destroyed. This is clear from the meaning of 'day' as a state of undarkened perception; and from the meaning of 'night' as a state of darkened perception. For periods of the day - morning, midday, evening, and night - correspond to degrees of enlightenment, that is, of intelligence and wisdom, 5672, 6110, and so to degrees of perception. In general day and night are called degrees of perception, not of enlightenment, because the evil who molest have no enlightenment, though they may still have perception. They have it for as long as there remains with them any knowledge at all of truth and goodness which they had acquired from the Church in which they had lived. For through truth and goodness they have contact with those who are in heaven. But once they have been deprived of such knowledge, as happens when they have undergone vastation, they no longer have any perception. Those in hell are, it is true, able to justify their evils, and also their falsities; but this is not perception. Perception is seeing that truth is truth and good is good, and also that evil is evil and falsity is falsity. But it is not perception when people see truth as falsity, or good as evil, and conversely see evil as good or falsity as truth. Those who do this have delusion instead of perception. That delusion takes on the appearance of perception, in that people such as they know how to justify falsities and evils by means of the kinds of ideas that suggest themselves to the senses and lend support to their evil longings.

In Swedenborg's works, “enlightenment” means an ordering and linking of truths in our minds by the Lord, so that we understand them more clearly and deeply than before. Perhaps because of his intense awareness of spiritual world influences on us, Swedenborg does not advocate us seeking our own enlightenment on what is true, but instead to acquire it through hearing and obeying what the Lord reveals to us through the Word.

When people read the Word as a holy book in order to know what’s true, and think about what they are reading, they are inviting the Lord to flow into their minds, and carry out this ordering and linking process.

When someone then tries to put those truths into the acts of his or her life, the order and enlightenment are much increased. Note that the Lord doesn’t reveal new truths this way, but simply casts new light on the truths that the person has freely acquired.

Such enlightenment can go on through this life on earth and on to eternity in heaven. Some translators of Swedenborg's Latin have used the word “illustration” instead of “enlightenment.”

(References: Arcana Coelestia 8211, 9424, 10551, Arcana Coelestia 10551 [2]; The Word 13; The Doctrine of the New Jerusalem Regarding the Sacred Scripture 57; The Doctrine of the New Jerusalem Regarding Faith 5)