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).

2646. 'The boy grew' means further perfection of the Lord's Rational. This is clear from the meaning of 'growing' as being perfected, and from the meaning of 'the boy' or son as the Lord's Divine Rational, dealt with in 2623.