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14 And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
2 Male and female created he them; and blessed them, and called their name Adam, in the day when they were created.
The face of the water (Genesis 1:2) signifies the knowledges of good and truth.
(References: Arcana Coelestia 19)