2556. 'Also she is truly my sister' means that rational truth possessed such a relationship. This is clear from the representation of 'Sarah when a sister' as rational truth, dealt with in 2508, and also from what follows next where the subject is the birth of the rational and its consequent relationship. In general it should be kept in mind that all things which exist with a truly rational, that is, regenerate, person - all that constitutes his affections, his perceptions, and his thoughts - are interconnected as in blood-relationships and relationships by marriage; for those things have been arranged in such a way that they mutually regard one another as families do which make up one house, and this in a most clear and distinct manner. Consequently when they reappear they do so in accordance with the relationships in which they exist. This ordered relationship with one another they receive from heaven - that is, from the Lord by way of heaven - flowing into them. With a person who is truly rational, that is, regenerate, everything has been arranged into order such as exists in heaven; and this ordered arrangement of everything within him comes as a result of heaven flowing into him. From that ordered arrangement within him a person possesses a power of thought, deduction, judgement, and reflection, which is so marvellous that it surpasses all human knowledge and wisdom, infinitely surpassing the conclusions which by analysis human effort draws from these sources. The reason these facts have not been known up to now is that people have not believed that all the things which constitute their affections, perceptions, and thoughts flow in - evil ones from hell, decent ones from heaven. Thus these have a connection with the things that are outside of them; yet the fact of the matter is that man, as regards his spirit, is joined to those outside of him in such a way that if he were deprived of that connection he would not remain alive for a single instant. This may also be recognized from the consideration that anything unconnected cannot possibly exist, and that anything unconnected perishes in an instant.

2508. 'She is my sister' means rational truth. This is clear from the meaning of 'a sister' as rational intellectual truth, dealt with in 1495. That rational truth is meant by 'a sister' cannot be seen by anyone except from the heavenly marriage; for the things that descend from that marriage have links with one another - resembling the ties of blood-relationships and relationships by marriage on earth, concerning which see 685, 917 - and in ways endlessly varying. The heavenly marriage exists solely between Divine Good and Divine Truth. Conceived from that marriage there exist with man the capacities to understand, to be rational, and to have knowledge; for without this conception from the heavenly marriage no one can possibly be endowed with understanding, reason, or knowledge, and cannot consequently be a human being. Insofar therefore as he draws from the heavenly marriage he is human. The heavenly marriage exists within the Lord Himself, so that the Lord is that marriage itself; for He is Divine Good itself and at the same time Divine Truth. The heavenly marriage exists with angels and men insofar as love to the Lord and charity towards the neighbour, and consequently insofar as faith derived from these exist with them, that is, insofar as the Lord's good and the truth derived from this do so. When this is the case with them they are called 'daughters and sons', and in relation to one another 'sisters and brothers', but with differences. The reason rational truth is called 'a sister' is that it is conceived from the influx of Divine Good into the affection for rational truths. The good conceived in this way in the rational is called 'a brother', and the truth 'a sister'. But this will be clearer from the words spoken by Abraham in verse 12 of this chapter, 'And also she is truly my sister, my father's daughter but not my mother's daughter; and she became my wife'.