'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.

(Referencat: Arcana Coelestia 1927)

116. THE SUN IN HEAVEN

In heaven, neither the sun of the world nor anything from that sun is seen, because it is wholly natural. In fact, nature has its beginning from that sun and whatever is produced by means of it is called natural. But the spiritual, in which is heaven, is above nature and quite distinct from what is natural, nor is there communication between the two except by means of correspondences. What the distinction between them is may be understood from the things said before about degrees (38), and what the communication is from the things said in the preceding two sections about correspondences.