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6 And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
In Joel 2:28, this phrase signifies people who are intelligent. (Arcana Coelestia 4682[2])
1 Then Moses and the children of Israel sang this song to Yahweh, and said, "I will sing to Yahweh, for he has triumphed gloriously. The horse and his rider he has thrown into the sea.