Arcana Coelestia #3959
3959. And Leah conceived again, and bare a sixth son to Jacob. That this signifies the reception and acknowledgment of truth, is evident from the signification of “conceiving,” as being to receive; and of “bringing forth,” as being to acknowledge (see n. 3955); and from the signification of a “son,” as being truth (n. 489, 491, 533, 1147, 2623, 3373).
Arcana Coelestia #1147
1147. And unto them were sons born. That these signify the doctrinals thence derived, is evident from the signification of “sons” in the internal sense, as being the truths of faith, and also the falsities, consequently doctrinal matters; by which both true and false are meant, for such are the doctrinals of churches. (That “sons” have such a signification may be seen above, n. 264, 489, 491, 535)