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.

The firmament of heaven represents mutual love. The firmament, as in Genesis 1, signifies the internal man.

(Odkazy: Arcana Coelestia 24)