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.

3299. 'And behold, there were twins in her womb' means that the two were conceived simultaneously. This is clear from the meaning of 'twins' as the two, that is to say, good represented by 'Esau' and truth represented by Jacob', and from the meaning of 'in the womb' as conception, dealt with above in 3293. With regard to the two, that is to say, the good and the truth of the natural, being conceived simultaneously, the situation is that anything that is born owes its being (esse) to the father but its manifestation (existere) to the mother. Both are necessary if anything is to come into existence. As regards good the natural is conceived from the good of the rational as the father, and as regards truth from the truth of the rational as the mother, 3286, 3288. It is good that confers life, but it does so through truth. Though both are called the soul good is nevertheless primarily the soul, while truth clothes it in a kind of thin casing or body, so that the good resides within the truth. This is what is meant by 'twins in her womb'.