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16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
A fruitful one signifies spiritual good from charity.
(References: Apocalypse Explained 357)
13 In the cities of the hill country, in the cities of the lowland, and in the cities of the South, and in the land of Benjamin, and in the places about Jerusalem, and in the cities of Judah, shall the flocks again pass under the hands of him who numbers them, says Yahweh.