777. That 'bird' means spiritual truth, 'flying thing' natural truth, and 'winged thing' sensory truth, is clear from what is said above, as also is the fact that truths are in this way different. Sensory truths, which come through seeing and hearing, are called 'winged things' because they are outermost. 'Wing' has a similar meaning when applied to other things.

'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.

(Odkazy: Arcana Coelestia 1927)