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.

5407. 'And let us live and not die' means spiritual life. This is clear from the meaning of 'living and not dying' as spiritual life, for nothing else than this is meant in the internal sense by 'living and not dying'. In the next life 'life' generally means heaven, but specifically it means eternal happiness, while 'death' generally means hell, but specifically eternal unhappiness there, as is also evident from many places in the Word. The reason why heaven generally and eternal happiness specifically are called 'life' is that wisdom, which essentially is good, and intelligence, which essentially is truth, are present in heaven, and the life of such wisdom and intelligence is received from the Lord, the Source of the whole of life. But because the contrary of this exists in hell - that is to say, evil exists instead of good, and falsity instead of truth, so that spiritual life has been snuffed out there - what exists there, compared with that existing in heaven, is death. For spiritual death consists in evil and falsity, and it exists with man as the desire for what is evil and a consequent thinking what is false. Evil genii and spirits refuse to listen when it is said that they have no life or that they are dead. For they say that they do have life since they have the power of will and the power of thought. But they are told that since life resides in what is good and true it cannot possibly do so in what is evil and false, because the two are contraries.