8707. 'And make known to them the way in which they must go' means the light of intelligence and the life led as a result of it. This is clear from the meaning of 'the way' as that which has reference to the understanding of truth, dealt with in 627, 2333, in this instance on a more internal level since it has reference to the understanding of truth which a member of the spiritual Church possesses as a result of the direct influx of truth from the Lord, an influx which does not bring a person any actual discernment of truth, only the light that enables him to use his understanding (the situation with this light is as it is with the light which the sight of the eye depends on. In order that the eye may see objects light is necessary, providing illumination all around; in this light the eye sees and discerns objects, and is struck by their beauty and delightfulness because of their accord with true order. The situation is similar with the sight of the inner eye which is the understanding, in order that this may see, light is again necessary, providing illumination all around, in which objects that are matters of intelligence and wisdom may manifest themselves. The source of this light is Divine Truth which goes forth directly from the Lord, see 8644 (end); and objects in that light appear beautiful and delightful to the extent that they accord with the good anyone possesses); and from the meaning of 'in which (light) they must go' as the life led as a result. For the meaning of 'going' in the internal sense as life, see 3335, 4882, 5493, 5605, 8417, 8420.

3338. In addition to those two forms of light there are also two forms of warmth or heat, which likewise have two separate sources. The warmth of heaven comes from the Sun of heaven, which is the Lord, and the warmth of the world comes from the sun of the world, which is plainly visible before our eyes. The warmth of heaven manifests itself before the internal man by means of spiritual loves and affections, whereas the warmth of the world manifests itself before the external man by means of natural loves and affections. The first form of warmth constitutes the life of the internal man, whereas the second constitutes that of the external man; for without love and affection a person cannot live at all. Between those two forms of warmth also correspondences exist. Those two forms of it become loves and affections from the influx of the Lord's life, and therefore they show themselves to man as if they were not forms of warmth, when in fact that is what they are. For if a person did not receive warmth from the Lord's inflowing life, both in his internal man and in his external man, he would instantly fall down dead. These considerations are evident to anyone from the fact that to the extent a person is fired by love he also becomes warmer, and to the extent love departs he cools off. It is from this warmth that a person's will lives, but from the light spoken of above that his understanding lives.