'The son of a cow' signifies the celestial natural level and natural exterior good.

(Odkazy: Arcana Coelestia 2184 [1-7], 4244)

10446. 'And all this land which I have spoken of I will give to your seed' means of which heaven and the Church consist. This is clear from the meaning of 'land' as the Church, dealt with in the places referred to in 9325, and since the Church is meant by 'the land' heaven as well is meant, the Church being the Lord's heaven on earth (and also the Church acts in unison with heaven, for the one comes into being from and is kept in being from the other); and from the meaning of 'seed' as the goodness and truth there, dealt with immediately above in 10445.