Arcana Coelestia #738
738. He is called 'a son of six hundred years' here because, as shown already, 'son' means intellectual truth. He is not however referred to as a son in verse 11 below because there the subject is his temptation as regards things of the will.
Arcana Coelestia #6169
6169. 'And Israel dwelt in the land of Egypt' means that spiritual good lived among the facts known to the Church. This is clear from the meaning of 'dwelling' as living, dealt with in 1293, 3384, 3617, 4451; from the representation of 'Israel' as spiritual good, dealt with in 5801, 5803, 5806, 5812, 5817, 5819, 5826, 5833; and from the meaning of 'the land of Egypt' as the natural mind, where factual knowledge resides, dealt with in 5276, 5278, 5280, 5288, 5301 - 'Egypt' meaning the facts known to the Church, see 4749, 4964, 4966, 6004.