Arcana Coelestia # 2082
2082. Shall bear thee a son. That this signifies that the rational will be from this conjunction of Divine truth with Divine good, is evident from the signification of a “son,” as being truth, here rational truth (also spoken of above, n. 2066).
Arcana Coelestia # 533
533. As nothing more is related concerning Lamech than that he begat sons and daughters, which are the conceptions and births of such a church, we shall dwell no longer on the subject. What the births were, or the “sons and daughters” appears from the church; for such as is the church, such are the births from it. Both the churches called “Methuselah” and “Lamech” expired just before the flood.