In the Bible, things that are lower down, or under, physically, generally represent things that are lower or more external spiritually. In some cases, the lower things have been separated and put away to protect the good, but in others, it can mean that a less exalted idea or good desire is supporting a more exalted one.

(Referencat: Arcana Coelestia 4564 [1-2], 8610, 9656)

2711. Verse 21 And he dwelt in the wilderness of Paran; and his mother took for him a wife from the land of Egypt.

'He dwelt in the wilderness of Paran' means the life of the spiritual man as regards good, 'a wilderness' here, as previously, meaning that which is obscure in comparison [with the celestial], 'Paran' enlightenment coming from the Lord's Divine Human. 'And his mother took for him' means the affection for truth. 'A wife from the land of Egypt' means the affection for knowledge, which the member of the spiritual Church possesses.