'Wilderness' signifies something with little life in it, as described in the internal sense in Luke 1:80 'Wilderness' signifies somewhere there is no good because there is no truth. 'Wilderness,' as in Jeremiah 23:10, signifies the Word when it is adulterated.

(参考: Arcana Coelestia 1927)

6147. 'From one end of the border of Egypt to the other end of it' means a spread throughout the whole natural where factual knowledge resides. This is clear from the meaning of 'from one end of the border to the other end of it' as a spread throughout the whole; and from the meaning of 'Egypt' as factual knowledge in the natural, often dealt with already, consequently the natural where factual knowledge resides. For the natural is the container, factual knowledge its contents; therefore 'Egypt' means both container and contents, that is, both the natural and factual knowledge. For the same reason 'Pharaoh king of Egypt' means the natural in general, 5160, 5799, and also factual knowledge in general, 6015, while 'the land of Egypt' means the natural mind, 5276, 5278, 5280, 5288, 5301.