9374. Thou and Aaron. That this signifies the Word in the internal sense and the external sense, is evident from the representation of Moses, as being the Word (of which above, n. 9372). But when Aaron, who was his brother, is joined to him, then Moses represents the Word in the internal sense, and Aaron the Word in the external sense (as also above, n. 7089, 7382).

3129. And Rebekah had a brother. That this signifies the affection of good in the natural man, is evident from the signification of a “brother” and a “sister” in the Word, namely, that a “brother” is the affection of good, and a “sister” is the affection of truth (see n. 367, 2360, 2508, 2524); for in the natural man, as in the rational, there are relationships by both blood and marriage of all the things therein (see n. 2556, 2739). And it also is from this that the mind, both the rational and the natural, is called a “house” (or family), where parents, brothers, sisters, kinsmen, and other relatives exist in order.

7269. Also Aaron thy brother shall be thy prophet. That this signifies the doctrine thence derived, is evident from the signification of a “prophet,” as being the truth of doctrine, thus doctrine from the Word (see n. 2534). (That Aaron represents the doctrine of the church, or the doctrine of good and truth which is from the Word, see n. 6998, 7009, 7089.) As a “prophet” signifies doctrine, in a determinate sense it signifies one who teaches, according to what was said just above (see n. 7268 at the end).