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31 And God saw every thing that he had made, and, behold, it was very good. And the evening and the morning were the sixth day.
To be fruitful relates to goodnesses, and to be multiplied, truths.
(References: Arcana Coelestia 1014, 1018)
7 Go to, let us go down, and there confound their language, that they may not understand one another's speech.