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25 And all the women that were wise-hearted did spin with their hands, and brought that which they had spun, the blue, and the purple, the scarlet, and the fine linen.
In Genesis 41:5, this signifies earthly knowledge. (Arcana Coelestia 5212)
5 He slept and dreamed a second time: and behold, seven heads of grain came up on one stalk, healthy and good.