130. That light in the heavens is spiritual and that this light is Divine truth may be inferred also from the fact that men as well as angels have spiritual light, and have enlightenment from that light so far as they are in intelligence and wisdom from Divine truth. Man's spiritual light is the light of his understanding, and the objects of that light are truths, which he arranges analytically into groups, forms into reason, and from them draws conclusions in series.# The natural man does not know that the light from which the understanding sees such things is a real light, for he neither sees it with his eyes nor perceives it by thought. And yet there are many who recognize this light, and distinguish it from the natural light in which those are who think naturally and not spiritually. Those think naturally who take account of the world only, and attribute all things to nature; while those think spiritually who take account of heaven and attribute all things to the Divine. It has often been granted me to perceive and also to see that there is a true light that enlightens the mind, wholly distinct from the light that is called natural light [lumen]. I have been raised up interiorly into that light by degrees; and as I was raised up my understanding became so enlightened as to enable me to perceive what I did not perceive before, and finally such things as I could not even comprehend by thought from natural light. Sometimes I felt indignant that I could not comprehend these things when they were so clearly and plainly perceived in the light of heaven.## Because there is a light that belongs to the understanding, the same things are said of it as of the eye, as that it sees and is in light when it perceives, and is in obscurity and shade when it does not perceive, and so on.
# Man is rational because his understanding is illumined by the light of heaven (n. 1524, 3138, 3167, 4408, 6608, 8707, 9128, 9399, 10569).
The understanding is enlightened because it is a recipient of truth (n. 6222, 6608, 10659).
The understanding is enlightened to the extent that man receives truth in good from the lord (n. 3619).
The understanding is such as are the truths from good by which it is formed (n. 10064).
The understanding has light from heaven, as the sight has light from the world (n. 1524, 5114, 6608, 9128).
The light of heaven from the Lord is always present with man, but it flows in only in the degree that man is in truth from good (n. 4060, 4214).
## When man is raised up from the sensual he comes into a milder light, and at length into heavenly light (n. 6313, 6315, 9407).
When man is raised up into intelligence there is an actual elevation into the light of heaven (n. 3190).
How great a light was perceived when I was withdrawn from worldly ideas (n. 1526, 6608).