3386. 'And he said, She is my sister' means rational truth. This is clear from the meaning of 'a sister' as rational truth, dealt with in 1495, 2508, 2524, 2556. By rational truth is meant, as stated just above, that which is seen as the truth, in whatever form people grasp it mentally or see it rationally. Isaac's saying that Rebekah was his sister, as Abraham on a previous occasion in Egypt had said that Sarah was his sister, Genesis 12:11-13, 19, and after that in Gerar, Genesis 20:2, 5, 12, embodies a similar arcanum, as may be seen from the explanation given at those two points. And because a like event took place on three occasions, and also these are recorded in the Word, it is clear that it holds an arcanum of supreme importance within it which cannot possibly be known to anyone except from the internal sense. What this arcanum is however is evident from what follows.

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.