2623. A son. That this signifies the Divine rational is evident from the signification of a “son.” In the internal sense of the Word a “son” signifies truth (n. 489, 491, 533); and as truth is the chief thing in the rational (n. 2072, 2189), the rational is also signified by a “son;” but here the Divine rational, in which principally there is good, which Isaac, who is the “son,” also represents (concerning which hereafter).
Arcana Coelestia #9374
9374. 'You and Aaron' means the Word in its inward and outward senses. This is clear from the representation of 'Moses' as the Word, dealt with above in 9373; but when Aaron, who was his brother, is linked with him, 'Moses' represents the Word in its inward sense, and 'Aaron' the Word in its outward sense, as also before in 7089, 7382.