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10 And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good.
9 And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so.
To be fruitful relates to goodnesses, and to be multiplied, truths.
(References: Arcana Coelestia 1014, 1018)