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4 And God saw the light, that it was good: and God divided the light from the darkness.
Blackness (as in Genesis 4:23) signifies the destruction of charity.
(Odkazy: Arcana Coelestia 43)
23 Lamech said to his wives, "Adah and Zillah, hear my voice. You wives of Lamech, listen to my speech, for I have slain a man for wounding me, a young man for bruising me.