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29 And it came to pass at midnight, that Jehovah smote all the first-born in the land of Egypt, from the first-born of Pharaoh that sat on his throne unto the first-born of the captive that was in the dungeon; and all the first-born of cattle.
'Old waste places' signify the celestial aspects of faith.
(références: Arcana Coelestia 613)