Arcana Coelestia #62
62. The stages and states of the regeneration of man - both of mankind and of the individual person - divide into six and are called the days of his creation. Gradually from being no man at all, he first becomes something, though only little, then something more, until the sixth day is reached, when he becomes 'an image'.
Psalms 136:5-9
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To him that by wisdom made the heavens: for his mercy endureth for ever.
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To him that stretched out the earth above the waters: for his mercy endureth for ever.
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To him that made great lights: for his mercy endureth for ever:
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The sun to rule by day: for his mercy endureth for ever:
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The moon and stars to rule by night: for his mercy endureth for ever.