In Ezekiel 40:42, they signify as follows: height, degrees of good and truth from the Highest or Inmost to the lowest or outermost; length, good; breadth, truth. (Apocalypse Explained 627[4])

In Revelation 21:16, they signify that all things of the New Jerusalem are from the good of love and equal; length signifies the good of love; breadth, truth from that love, and height, good and truth together in every degree. (Apocalypse Revealed 907)

'Pharaoh,' in Genesis 40, represents the new natural self. 'Pharaoh' and 'the Egyptians' in the Word, signify the sensory and scientific principles. 'Let Pharaoh live,' as in Genesis 42:16, is a phrase that is employed to say something emphatically, thus to state a certainty. 'Pharaoh and his army' signify people who are in falsities from evil. 'Pharaoh' signifies false ideas infesting the truth of the church. It also signifies scientific ideas, or the natural principle in general.

(Odkazy: Arcana Coelestia 1487, Arcana Coelestia 5192; Exodus 16)