Arcana Coelestia # 78
78. Wisdom is described by 'the river in the garden', from which came 'four rivers'. The first of these is good and truth; the second is the knowledge of all things constituting good and truth, that is, constituting love and faith, which belong to the internal man; the third is reason, and the fourth knowledge, which belong to the external man. All of these derive from wisdom, which in turn stems from love to the Lord and faith in Him, verses 10-14.
Jehovah caused to rain
In Genesis 19:24, it appears in the sense of the letter, as if there were two Jehovahs: one on earth, and one in heaven. When Jehovah is first named it refers to the Lord's divine human, and the second time the essential divine or the father.
(Odkazy: Arcana Coelestia 2447)