Arcana Coelestia#6975
6975. 'You are to take some of the water of the river' means factual knowledge that has falsities in it. This is clear from the meaning of 'the water of the river' - the river of Egypt, or the Nile - as factual knowledge that has falsity in it. 'Water' means truths, see 2702, 3424, 4976, and in the contrary sense falsities, 790, while 'the river of Egypt' means the falsity within factual knowledge, 6693.
Exodus第7章:20-21
20
Moses and Aaron did so, as Yahweh commanded; and he lifted up the rod, and struck the waters that were in the river, in the sight of Pharaoh, and in the sight of his servants; and all the waters that were in the river were turned to blood.
21
The fish that were in the river died; and the river became foul, and the Egyptians couldn't drink water from the river; and the blood was throughout all the land of Egypt.
