491. The same things are signified by “sons” and “daughters” in this chapter (verses 4, 7, 10, 13, 16, 19, 26, 30), but such as is the church, such are the “sons and daughters” that is, such are the goods and truths; the truths and goods here spoken of are such as were distinctly perceived, because they are predicated of the Most Ancient Church, the principal and parent of all the other and succeeding churches.
Arcana Coelestia #9000
9000. 'And if he betroths her to his son' means if it is in agreement with [some] derived truth, so that it can be joined to it. This is clear from the meaning of 'son' as truth, dealt with in 489, 491, 533, 1147, 2623, 2803, 2813, 3373, 3704, 4257, at this point derived truth since 'the master', who is the father, means the main truth from which all the rest are derived, 8981; and from the meaning of 'betrothing' as being joined together, dealt with above in 8996.