2524. 'She herself also said, He is my brother' means that the rational itself so declared that celestial good should be coupled with it. This becomes clear from the meaning of 'a sister', to whom 'she herself' refers here, as the rational, 1495, 2508, and from the meaning of 'a brother' as good that stands related to truth, 367, 2508. For the implications of this are as follows: Divine Good and Divine Truth are united to each other as if in a marriage. From this comes the heavenly marriage, and also conjugial love, even down to the natural world below. But the good and truth of the rational are not joined to each other as if in a marriage but as in a blood relationship like that of brother and sister. For as regards truth, the rational is conceived from an influx of Divine Good into the affection for knowledge and cognitions, see 1895, 1902, 1910, whereas the good of the rational comes through an influx of Divine Good into that truth, which then becomes that good itself which belongs to charity and is 'the brother' of faith, or what amounts to the same, of truth, 367.

[2] As regards the way in which the good and truth of the rational are acquired, its good comes from Divine good, but not its truth from Divine truth, for the truth of the rational is acquired through knowledge and cognitions which are implanted by means of the senses, external and internal, and so by an external route. Consequently many illusions that result from sensory impressions cling to the truths of that rational which cause those truths not to be truths. Nevertheless when Divine Good flows into them and takes hold of them they are in that case seen as truths and are acknowledged as truths, even though they are no more than appearances of truth. The good itself within those truths undergoes modification determined by the shadows there and comes to have the same nature as the truth. This is one arcanum which lies concealed in these words, that the rational so declared that celestial good should be coupled with it.

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'.