46. Who also am your brother, signifies and respecting the good of love to Him. This is evident from the signification of "brother," as being the good of love. "Brother" signifies the good of love, because in heaven there are no other than spiritual relationships, thus no other brotherhoods; for those there do not become brothers by birth; moreover, those who were brothers in the world do not recognize each other there, but each regards the other from the good of love; those most closely conjoined regarding each other as brothers; and others, according to their conjunction by good, regarding each other as kinsmen and as friends. This is why in the Word "brother" signifies the good of love. This, moreover, the Lord teaches where it is said:

One said unto Jesus, Behold, Thy mother and Thy brethren stand without seeking to speak with Thee: but He answered and said, Who is My mother, and who are My brethren? (Matthew 12:47-50).

My mother and My brethren are they who bear the Word of God and do it (Luke 8:19-21).

And in another place:

One is your Teacher, Christ, and all ye are brethren (Matthew 23:8).

From this it is evident what it is to be a "brother in the Lord." (But see what has been shown before respecting this; as that all are consociated in heaven according to spiritual kinships, which are the kinships of the good of love and faith, and that such recognize each other as kindred, in the work on Heaven and Hell 205; and in the Arcana Coelestia 685, 917, 2739, 3612, 3815, 4121; consequently by "brethren" in the Word are meant those who are conjoined by good, n. 2360, 3303, 3803, 3815, 4121, 4191, 4267, 5409, 6756, 10490; that the Lord calls those "brethren" who are in the good of love and of faith from Him, n. 4191, 5686, 5692, 6756; that they are called "brethren" also from spiritual kinship, n. 6756; that charity and faith, thus good and truth, are brethren, in what respect, n. Arcana Coelestia 367, 3160, 9806; that good and truth are also brother and sister, in what respect, n. 2508, 2524, 3160; that good and truth are also married partners, in what respect, n. 3160; that "man with brother" means truth with good, n. 3459, 4725)

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'.