In Exodus 7:19, 8:5, Numbers 21:15, Psalms 46:4, 78:16, 124:4, Isaiah 30:25, and Luke 6:48, this signifies truths of faith. (Arcana Coelestia 795[3])

In Joel 3:18, this signifies the singulars of the Lord's celestial kingdom, and also of the Word. (Apocalypse Explained 376[5])

A 'stream' signifies aspects of knowledge or intelligence.

(Odkazy: Arcana Coelestia 6015)

3971. 'It happened, when Rachel had borne Joseph' means acknowledgement of the spiritual represented by Joseph. This is clear from the meaning of 'bearing' as acknowledging, dealt with in 3905, 3911, 3915, 3919; from the representation of 'Rachel' as the affection for interior truth, dealt with in 3758, 3782, 3793, 3819; and from the representation of 'Joseph' as the spiritual kingdom and so the spiritual man, dealt with in 3969, and therefore as the spiritual; for having its origin in the Lord, the spiritual is that which makes the spiritual man and also the spiritual kingdom what they are. By means of Jacob's sons by the servant-girls and by Leah, the sections prior to this have dealt with the reception and acknowledgement of general truths, and eventually with the joining of those truths to the interior man, and so have dealt with man's regeneration up to and including his becoming spiritual. 'Joseph' is that spiritual man. The present sections coming directly after them deal with the fruitfulness and the multiplication of truth and good, which are meant by the flock which Jacob obtained for himself by means of Laban's flock.

[2] Indeed after the joining of the interior man to the external man has taken place, that is, of the spiritual and the natural, fruitfulness of good and multiplication of truth take place, for that joining together of the two is the heavenly marriage with man. It is from this marriage that such fruitfulness and multiplication spring. This also is why 'Joseph' in the external sense means fruitfulness and multiplication, 3965, 3969, the expressions 'fruitfulness' being used in reference to good, and 'multiplication' to truth, 43, 55, 913, 983, 2846, 2847.