4803. A matter wholly unknown in the world and worthy of mention is this: The states in which good spirits and angels live undergo constant change and perfection. In this way they are conveyed to the more internal parts of the province in which they dwell, and so into more excellent functions. For in heaven purification takes place constantly, which is so to speak a new creation. Yet the situation is that no angel to all eternity can possibly attain complete perfection. The Lord alone is the perfect One, He being the root and the source of all perfection. Those who correspond to the mouth constantly wish to be speaking, for speaking gives them utmost pleasure. While undergoing perfection they are restricted to speaking nothing but that which is beneficial to companions, the community, heaven, and the Lord. The delight they take in speaking in that way grows in the measure that the desire to regard themselves in what they speak and to strive after wisdom from what is properly their own passes away from them.

9516. 'And their faces of a man towards his brother' means truth and good joined together. This is clear from the meaning of 'the face' as the interiors, at this point looking towards and being joined to, for when two are looking each towards the other they join themselves together on the level of interiors (interiors being meant by 'the face', 1999, 2434, 3527, 3573, 4066, 4796-4805, 5102, 5165, 5168, 5695, 9306); and from the meaning of 'man towards brother' as mutually, dealt with in 4725, so that truth joined to good is meant. For 'man' means truth, 3134, 3309, 3459, 4725, 7716, 9007, and 'brother' good, 367, 2360, 3303, 3803, 3815, 4121, 4191, 5409, 5686, 5692, 6756.

5102. 'Saying, Why are your faces sad today?' means, What affection gives rise to this sadness? This is clear from the meaning of 'faces' as the things that are within, dealt with in 358, 1999, 2434, 3527, 4066, 4796, 4797, and so as the affections, for a person's interiors from which his thoughts spring - which are also things that are within - are his affections; and being aspects of his love, these affections are essentially his life. It is well known that the affections reveal themselves in the faces of those who are in a state of innocence; and when those affections reveal themselves, so too does a general impression of their thoughts, for people's thoughts are the forms their affections take. Regarded in itself therefore the face is nothing else than an image representing the things that are within.

[2] No face is looked at by the angels in any other way, for angels do not see the material but the spiritual form that a person's face takes; that is, they see the form presented by his affections and the thoughts springing from those affections. These are the essential components of the human face, as anyone may recognize from the fact that when bereft of thought and affections the face is completely dead, and that the face is enlivened by them and owes its pleasing looks to them. The sadness expressing some affection, or an affection which gives rise to sadness, is meant by Joseph's words, Why are your faces sad today?