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7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.
To be fruitful relates to goodnesses, and to be multiplied, truths.
(References: Arcana Coelestia 1014, 1018)
17 It came to pass, when they had taken them out, that he said, "Escape for your life! Don't look behind you, and don't stay anywhere in the plain. Escape to the mountains, lest you be consumed!"