3386. And he said, She is my sister. That this signifies rational truth, is evident from the signification of “sister,” as being rational truth (n. 1495, 2508, 2524, 2556). By rational truth is meant that which appears as true according to the apprehension, or before the rational, as just said. The arcanum that Isaac said that Rebekah was his sister; as Abraham had before said that Sarah was his sister, first in Egypt (Genesis 12:11-13, 19), and afterwards in Gerar (Genesis 20:2, 5, 12), involves what is much the same, as may be seen from the explication of the former passages; and as the same thing occurred three times, and is three times related in the Word, it is evident that there is in it an arcanum of the greatest moment, which can never be known to anyone except from the internal sense; but what the arcanum is, appears from what follows.

2556. And moreover truly she is my sister. That this signifies that rational truth had such an affinity, is evident from the representation of Sarah, as a sister, as being rational truth (see n. 2508); as well as from what now follows concerning the birth of the rational, and its consequent affinity. It is to be held in general that all things in a truly rational, that is, a regenerate man-all the things of his affections, of his perceptions, and of his thoughts-are conjoined with one another as if by blood relationship and affinity; for they have been so disposed that they mutually regard one another as do the families of one house, and this in the most distinct manner; and hence they are reproduced in accordance with these affinities. This they derive from the influx of heaven, that is, of the Lord through heaven. With the man who is truly rational, that is, regenerate, all things have been disposed into order such as exists in heaven, and this from influx. From this there is given man a faculty of thinking, concluding, judging, and reflecting so wonderful as to exceed all mere human knowledge and wisdom, and immeasurably to surpass the analyses which human industry has drawn from these sources. The reason why these things have been hitherto unknown, is that it has not been believed that all things of the affections, perceptions, and thoughts flow in (the evil from hell, and the good from heaven), thus that these have a connection with the things which are without them; when yet the truth is that man is so conjoined as to his spirit with those who are without him, that if he were deprived of this connection he would not live a single moment; as may also be known from the fact that anything unconnected is impossible, and that anything unconnected perishes in a moment.