483. The names which follow - Seth, Enosh, Kenan, Mahalalel, Jared, Enoch, Methuselah, Lamech, and Noah - mean just so many Churches, the first and chief one of which was called Man. The chief characteristic of these Churches was perception, and therefore the differences between the Churches of that period were primarily differences in perception. On the subject of perception, let it be mentioned here that nothing else reigns in the whole of heaven but the perception of good and truth. Its nature defies description, and includes differences so countless that no one community's perception is exactly like that found in another. Perceptions there fall into genera and species. Those genera are countless, and so too are the species within every genus. These in the Lord's Divine mercy will be dealt with later on. Since there are countless genera, and countless species within every genus, and even more countless sub-species to each species, it becomes clear how very little indeed the world of today knows about celestial and spiritual matters. It does not even know what perception is, and if told, it does not believe that it even exists. The same applies to other matters too.

[2] The Most Ancient Church represented the Lord's celestial kingdom, even as to each variation of perception in its genus and species. But because nobody nowadays knows what perception is, not even the most general aspect of it, facts of a wholly strange and meaningless nature would therefore be imparted if the genera and species of the perceptions of those Churches were stated. They were divided into houses, families, and nations, and used to contract marriages within their own houses and families, in order that genera and species of perception might be established and be derived from parents altogether as reproductions of innate dispositions. This also is why members of the Most Ancient Church dwell together in heaven.

487. 'Days means periods of time and states in general. This has been shown in Chapter 1, where the 'days of creation' have no other meaning. In the Word it is very common for a whole period of time to be called 'a day', as it clearly is in the present verse and in verses 5, 8, 11, 14, 17, 20, 23, 27, 31, below; and therefore the states that belong to periods of time in general are meant by 'days' as well. And when 'years' is attached, then periods of years mean the natures of those states, and so the states in particular.

[2] The most ancient people had their own particular numbers which they would use to mean different aspects of the Church - for instance, the numbers three, seven, ten, twelve, and many which they obtained from these and other numbers - and in so doing incorporated states of the Church. These numbers therefore contain arcana that would require considerable effort to unravel. Really a number was an evaluation of the states of the Church. The same feature occurs throughout the Word, especially in the prophetical. And the religious ceremonies of the Jewish Church also entail numbers specifying periods of time as well as quantities; for example, in connection with sacrifices, minchahs, oblations, and other practices, which in every case have special reference to holy things. Consequently eight hundred in this verse, nine hundred and thirty in the next, and the numbers of years mentioned in the verses that follow after that, embody in particular more matters than can possibly be retold; matters, that is to say, which have to do with changes in the state of their Church in relationship to their own general state. Later on, in the Lord's Divine mercy, the meaning of the simple numbers up to twelve will be given, for without knowing these first of all no one can grasp what compound numbers mean.