860. From these considerations it also becomes clear that all regeneration advances from evening to morning, as is mentioned six times in Genesis 1 where the regeneration of man is the subject. Here the evening is described in verses 2-3, the morning in verses 4-5. The present verse describes the first ray of light or the morning of this state as 'the tops of the mountains appearing'.

'The Nile' or 'river of Egypt' represents the sensory things subject to the intellectual mind and the ideas derived there. This is because they are the extreme parts of the spiritual things in the Lord's kingdom.

(References: Arcana Coelestia 5196)