'The meat in mine house,' as in Malachi 3:10, signifies remains in the internal self, because they are stealthily implanted among many evils and falsities.

(References: Arcana Coelestia 576; Malachi 3)

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.