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.

In John 6:63, this signifies the spiritual and celestial sense of the Word and its celestial sense. (Doctrine Regarding Sacred Scripture 39)

(References: John 6)