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Everyone had four faces, and each one of them had four wings.
722. 17:3 So he carried me away in the spirit into the wilderness. This symbolizes John's being carried away in a spiritual state to people in whom everything of the church had been destroyed.
A wilderness symbolizes a church in which there is no longer any truth, thus where everything in it has been destroyed (no. 546). And to be in the spirit means, symbolically, to be in a spiritual state as a result of Divine influx, as said in no. 36 above. Consequently, John's being carried away in the spirit into the wilderness means symbolically that he was carried away in a spiritual state to people in whom everything having to do with the church was destroyed.