Arcana Coelestia #3959
3959. 'Leah conceived again and bore a sixth son to Jacob' means reception and acknowledgement, that is to say, of truth. This is clear from the meaning of 'conceiving' as receiving, and of 'bearing' as acknowledging, dealt with above in 3955, and from the meaning of 'son' as truth, dealt with in 489, 491, 533, 1147, 2623, 3373.
Arcana Coelestia #491
491. The same things are meant by 'sons and daughters' in verses 4, 7, 10, 13, 16, 19, 26, 30, of this chapter, but the character of a Church determines that of its 'sons and daughters', or goods and truths. Here they are truths and goods that men perceived most clearly, for they have regard to the Most Ancient Church, the head and forefather of all other Churches that followed after it.