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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:
5 And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.
The face of the water (Genesis 1:2) signifies the knowledges of good and truth.
(References: Arcana Coelestia 19)